AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual SIP Software Release 6-0-0 AT-RG213
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Document Number J613-M0524-00 Copyright © 2002 Allied Telesyn International, Corp. 960 Stewart Drive Suite B, Sunnyvale CA 94086, USA. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn. Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice.
Contents Purpose of this Manual...................................................................................................... vii Intended Audience............................................................................................................ viii Structure of this Manual......................................................................................................ix Standards and Protocols .........................................................................................
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual iv Configuring the IP address ............................................................................................... 27 DHCP Client ..................................................................................................................... 27 NTP Protocol .................................................................................................................... 28 Command Reference ...............................
List of Figures Figure 1. Example output from the SHOW CONFIG command. ........................................................................................ 14 Figure 2. Example output from the SHOW LOADER command. ....................................................................................... 15 Figure 3. Example output from the SHOW SYSTEM command. ....................................................................................... 16 Figure 4. IP packet or datagram.........................
List of Tables Table 1. Protocols and standards supported by the AT-RG213 Gateway. ..........................................................................ix Table 2. Typographic conventions used in this manual. ..................................................................................................... xii Table 3. Hardware and Software requirements.................................................................................................................... 2 Table 4.
Preface Purpose of this Manual This manual is the complete reference to the configuration, management and operation of the AT-RG213 Residential VoIP Gateway, and includes detailed descriptions of all management commands. The AT-RG213 is a Customer Promise Equipment (CPE) designed to be installed in the customer residence which interfaces with new generation fibre/copper networks designed to support broadband communications.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual viii one 10/100 BaseT/Base FX Ethernet port for uplink (WAN port) three 10/100 Base T Ethernet ports for connecting user equipment (pc, printer, etc.) Vlan Tagging configuration and management as defined in IEEE 802.
Preface ix Structure of this Manual This manual is organised into the following chapters: Chapter 1, Operation describes general operation, management and support features, including user authentication, down-line loading and installing software releases. Chapter 2, Internet Protocol (IP) describes the implementation of the Internet Protocol (IP) and all the commands related to IP network configuration management.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual x H.323 ICMP IEEE 802.2 IEEE 802.3 IGMP IP IP addressing L2TP NTP RTP-RTCP SDP SIP SNMP, MIBs TCP Telnet TFTP UDP VLAN ITU H.323, ITU H.225, ITU H.245 RFCs 792, 950. ANSI/IEEE Std 802.2-1985. ANSI/IEEE Std 802.3-1985, 802.3a, b, c, e-1988. RFC 3228 RFCs 791, 821, 950, 951, 1009, 1055, 1122, 1144, 1349, 1542, 1812, 1858. RFC 1597. RFC 2661 RFCs 958, 1305, 1510. RFC 1889, ITU G.711, ITU G.723, ITU G.
Preface xi information about RFC repositories and how to retrieve RFCs via FTP, mail servers, WWW, Gopher and WAIS. To learn how to obtain a copy of an RFC via email from a mail server, point your browser at http://www.isi.edu/in-notes/rfc-editor/rfcinfo. To obtain a copy of an RFC from a Web site, or to search RFC repositories for a specific RFC or all RFCs relating to a topic, point your Web browser at http://www.rfc-editor.org/rfc.html.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual xii IP Telephony with H.323: Architectures for Unified Networks and Integrated Services, Vineet Kumar, Markku Korpi, Senthil Sengodan. Publicly Accessible Documents Allied Telesyn maintains an online archive of documents and files that customers can access via the World Wide Web or via anonymous FTP. For WWW access, point your Web browser at http://www.alliedtelesyn.com.
Preface xiii Command syntax is defined using these conventions: This Is used for CAPS Keywords to be typed as shown. In general keywords may be abbreviated to the shortest string that is unambiguous within the current context. The exception is commands with a profound effect, such as RESTART IMMEDIATELY, which must be typed in full. A variable placeholder, to be replaced by an actual value in a command. Square brackets enclose optional items.
xiv AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Command The syntax of the command What the command does, and what each of the parameters mean Examples show how the command is used Reference to related command SIP Software Release 6-0-0 J613-M0524-00
Chapter 1 Operation Introduction Overview of the AT-RG213 Residential VOIP Gateway The AT-RG213 Residential VoIP Gateway is a home-use access device which integrates the services of fast internet, digital video and telephony over Internet (VoIP). The device has three (3) LAN ports to be connected to PC’s or home/office peripherals and one WAN port to connect the CPE (Customer Promise Equipment) to an ISP (Internet Service Provider) network.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 2 Getting Started The AT-RG213 is supplied with default settings that allow it to operate immediately as a Residential Gateway. Even if this is all you want to use the gateway for, you should still gain access to the gateway configuration, if only to change the manager password to prevent unauthorised access. The AT-RG213 is provided with a Command Line Interface (CLI) for configuration and management.
Operation 3 Connect a VT100-compatible terminal to the RS-232 Terminal Port, set the communication parameters on the terminal (seeTable 5), and press [Enter] a few times until the AT-RG213 login prompt appears; or Connect the COM port of a PC running terminal emulation software such as Windows Terminal or HyperTerminal to the RS-232 Terminal Port, set the communications parameters on the emulation software (see Table 5), and press [Enter] a few times until the AT-RG213 login prompt appears. Table 5.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 4 Make sure you remember the new password you create, as a lost password cannot be retrieved, and would mean losing access for configuring and monitoring the ATRG213. Entering Commands The AT-RG213 is controlled with commands described in this document. While the keywords in commands are not case sensitive, the value entered for some parameters are. The AT-RG213 supports command line editing and recall (see Table 6). Table 6.
Operation 5 HELP [module] If the module is not specified, a list of available modules is displayed (see Table 7 for available Modules). The HELP command displays information from the system help file store in FLASH memory. Table 7.
6 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual restarted or the RESTART REBOOT command is executed, the configuration will be restored to the one defined by the boot script. To retain any configuration changes made after boot even after a restart or power cycle, save the modified configuration as a script file, according to the following examples. Example 1: how to create a configuration script To create the configuration script sip.
Operation 7 The loader can be configured with the command: SET LOADER [FILE=filename] [SERVER=ipaddr] This command changes the default parameters used in load command. FILE is the default image file loaded and SERVER the default tftp server. Example 1: Install Software upgrade for AT-RG213 To download the release file named “rg1-sip-6-0-0.bin” from a TFTP server (es. 192.168.0.50) to the AT-RG213 FLASH memory: LOAD IMAGE FILE= rg1-sip-6-0-0.bin SERVER=192.168.0.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 8 Examples To create the configuration script script.cfg based on the current device configuration: CREATE CONFIG=script.cfg See Also SHOW CONFIG VIEW CONFIG SET CONFIG DELETE CONFIG SAVE CONFIG LOAD CONFIG DELETE CONFIG Syntax Short Syntax DELETE CONFIG=filename D CONF=filename where: filename is a file name that can contains up to 20 characters excluding| ; , ! @ # $ ( ) < > / \ " ' `~ { } [ ] = + & ^ .
Operation 9 Short Syntax E CONF=filename [FLASH | SERVER[=ipaddr]] where: filename is a file name that can contain up to 20 characters excluding | ; , ! @ # $ ( ) < > / \ " ' `~ { } [ ] = + & ^ . ipaddr is an ip address in dotted decimal notation Description Examples This command allows executing a configuration script from a tftp server or internal flash. The default script location is the flash. To execute the configuration script script.cfg from the server 192.168.1.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 10 ipaddr is an ip address in dotted decimal notation Description Examples This command allows to load in the device flash a configuration script from a tftp server. If the server is not given the one previously set with the command SET LOADER is used. The name of the configuration script will be the same of the filename and if a script with the same name already exists in the flash, this will be overwritten.
Operation 11 LOGOUT Syntax Description See Also LOGOUT This command closes the current console or telnet session. SHOW SYSTEM RESTART REBOOT Syntax Description RESTART REBOOT This command cause a device cold reboot SAVE CONFIG Syntax Short Syntax SAVE CONFIG=filename [SERVER=ipaddr] SA CONF=filename [SERVER=ipaddr] where: filename is a file name that can contain up to 20 characters excluding | ; , ! @ # $ ( ) < > / \ " ' `~ { } [ ] = + & ^ .
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 12 SET CONFIG Syntax Short Syntax SET CONFIG=[filename | NONE] S CONF=[filename | NONE] where: filename is a file name that can contain up to 20 characters excluding | ; , ! @ # $ ( ) < > / \ " ' `~ { } [ ] = + & ^ . Description Examples This command configures the device to execute a specific configuration script starting from the following start-up. The script must exist on the flash when the command is executed.
Operation 13 See Also LOAD IMAGE LOAD CONFIG SET PASSWORD Syntax SET PASSWORD Short Syntax SET PASSWORD Description Examples This command allows changing login password. Please note that the change can become permanent only after a new CREATE CONFIG. The password length must be between 3 and 15 characters length.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 14 See Also SHOW SYSTEM SHOW CONFIG Syntax Short Syntax Description SHOW CONFIG [FIRST | NEXT | BOOT] SH CONF [FIRST | NEXT | BOOT] This command shows the list of scripts present on the flash and the script executed at the start-up time, if any. If FIRST option is given the first script in the list is returned and the internal reference is set to this first script.
Operation 15 -------------------------------------------------boot.cfg 675 25-Feb-2001 12:01:24 remote.cfg 1987 14-Feb-2001 10:01:24 -------------------------------------------------Boot Configuration Script: boot.cfg -------------------------------------------------Table 8. Parameters displayed in the output of the SHOW CONFIG command. Parameter Meaning FILENAME The script file name SIZE The script file size in bytes CREATED BOOT CONFIGURATION SCRIPT When the script has been created.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 16 Table 9. Parameters displayed in the output of the SET LOADER command.
Operation 17 Table 10. Parameters displayed in the output of the SHOW SYSTEM command. Parameter NAME CONTACT LOCATION Protocol Application File APPV BOOTV PRODUCT HWREV Platform FLASH RAM Meaning System name previously set with SET SYSTEM NAME=… command System contact previously set with SET SYSTEM CONTACT=… command System location previously set with SET SYSTEM LOCATION=… command VoIP protocol (e.g. SIP) The running application file image Application version Boot version Product name (e.g.
Chapter 2 IP Introduction This chapter describes the main features of the Internet Protocol (IP) and how to configure and operate the AT-RG213 IP interface. IP protocols are widely used and available on nearly every hosts and PC systems. They provide a range of services including remote login, file transfer and Email. The Internet The Internet (with a capital “I”) is the name given to the large, worldwide network of networks based on the original concepts of the ARPAnet.
IP 19 contains the information necessary to move the packet across the internet. It must be able to cope with missing and duplicated packets as well as possible fragmentation (and reassembly) of the original packet. Packets are sent using a connectionless transport mechanism. A connection is not maintained between the source and destination addresses; rather, the destination address is placed in the header and the packet is transmitted on a best effort basis.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 20 Figure 4. IP packet or datagram 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 ver IHL type of service identification time to live total length fragment offset flags protocol header checksum source IP address destination IP address options padding user data Table 11. Functions of the fields in an IP datagram Field Function ver The version of the IP protocol that created the datagram.
IP 21 Protocol Header checksum Source IP address Destination IP address Options Padding User data The high level protocol used to create the message (analogous to the type field in an Ethernet packet) A checksum of the header 32-bit IP address of the sender 32-bit IP address of the recipient An optional field primarily used for network testing or Debugging. All bits set to zero—used to pad the datagram header to a length that is a multiple of 32 bits. The actual data being sent.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 22 Figure 5. Subdivision of the 32 bits of an Internet address into network and host fields for class A, B and C networks 1 CLASS A 0 7 CLASS C HOST NETWORK 1 1 CLASS B 24 1 0 14 16 NETWORK HOST 1 1 1 21 1 1 0 NETWORK 8 HOST The addressing scheme is designed to allow routers to efficiently extract the host and network portions of an address. In general a router is only interested in the network portion of an address.
IP 23 172.16 is the DDN assigned network number .9 is the user assigned subnet number .190 is the user assigned host number The value 0.0.0.0 is used to define the default address, while a value of all ones in any host portion (i.e. 255) is reserved as the broadcast address. Some older versions of UNIX use a broadcast value of all zeros, therefore both the value ‘0’ and the value ‘255’ are reserved within any user assigned host portion. The address 172.16.0.
24 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Generally they would be allocated geographically with subnet 2 being one site, subnet 3 another and so on. Some sites may have a requirement for multiple subnets on the same LAN. This could be to increase the number of hosts or simply to make administration easier. In this case it is normal (but not required) that the subnets be assigned contiguously for this site. This makes the allocation of a subnet mask easier.
IP 25 Multicasting is not the same as broadcasting on the Internet or on a LAN. In networking jargon, broadcast data are sent to every possible receiver, while multicast packets are sent only to receivers that want them. The mutlicast approach uses up a LOT less bandwidth. Not only does it make better use of available bandwidth it means that there is no limit to the number of hosts that can ‘tune in’. Consider the case of sending video on a LAN using the ‘multiple-unicast’ approach.
26 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual there is a process whereby all the routers back up the chain to the server now know to forward the stream to this router – ie the router has joined onto (‘grafted to’) the tree through which this stream is flowing. IGMP snooping IGMP snooping is something that layer-2 switches do to reduce the amount of multicast traffic on a LAN. IGMP snooping is a solution to a particular problem.
IP 27 This is rather a waste of bandwidth, and the purpose of multicasting is to make efficient use of bandwidth. The solution to this problem is to make the layer-2 switches aware of the IGMP packets that are being passed around. That is, although the IGMP packets are destined for the router, the layer-2 switches need to ‘snoop’ them as they go past.
28 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual To test the interface configuration: SHOW IP INTERFACE This command shows the major information releted to IP interface configuration. To request a specific parameter, its name must be included in the command: SHOW IP INTERFACE=eth0 NTP Protocol The device does not have any backup real time clock (RTC), so the NTP protocol is implemented to retrieve at every power-up the actual time from a server.
IP 29 Command Reference ADD NTP SERVER Syntax Short Syntax ADD NTP SERVER=ipaddr [DEFAULT] A NTP SERVER=ipaddr [DEFAULT] where: ipaddr is an ip address in dotted decimal notation Description Examples This command adds a NTP server to the internal list that contains maximum 10 entries. If the DEFAULT option is used, this will be the preferred server and the others will be used only on the default server failure.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 30 DISABLE IP IGMP Syntax Short Syntax Description Examples DISABLE IP IGMP DIS IP IGMP This command disables IGMP snooping support. To disable the IGMP support: DISABLE IP IGMP See Also ENABLE IP IGMP SET IP IGMP SHOW IP IGMP ENABLE IP IGMP Syntax Short Syntax Description ENABLE IP IGMP EN IP IGMP This command enables IGMP snooping to run. Multicast traffic will be isolated per VLAN.
IP 31 ENABLE NTP Syntax Short Syntax Description Examples ENABLE NTP EN NTP This command enables the NTP module. This must be called before any other command of this module.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 32 Short Syntax S IP IGMP [QI=1..65535] [LT=0..65535] [TO=1..65535] Description This command sets operational timers for IGMP. The default values for these timers will suit most networks. Changing them to inappropriate values can cause IGMP to function in undesirable ways. A system administrator should only change these timer values based on a sound understanding of their interaction with other devices in the network.
IP 33 See Also DISABLE IP IGMP ENABLE IP IGMP SHOW IP IGMP SET IP INTERFACE Syntax Short Syntax SET IP INTERFACE=name [{CONFIGURATION={DHCP | DHCPCONF [SERVERID=id]} | [IPADDRESS=ipaddr] [MASK=ipaddr] [GATEWAY=ipaddr]] S IP INT=name [{CONF={DHCP | DHCPCONF [SERVERID=id]} | [IPADDRESS=ipaddr] [MASK=ipaddr] [GATEWAY=ipaddr]] where: name is the interface short name plus the interface number (e.g. eth0, ppp1, ..
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 34 SET IP INTERFACE=eth0 GATEWAY=192.168.0.1 See Also SHOW IP INTERFACE SET NTP Syntax Short Syntax SET NTP UTCOFFSET=[+,-]offset S NTP UTCOFFSET=[+,-]offset where: offset is the offset in hours from the GMT so must be between ---12 and +12. Description This command configures the time zone as hours offset from the GMT.
IP 35 SHOW IP IGMP Syntax Short Syntax SHOW IP IGMP SH IP IGMP Description This command displays information about IGMP, and multicast group See Also members for each VLAN. DISABLE IP IGMP ENABLE IP IGMP SET IP IGMP Figure 7. Example output from the SHOW IP command. 0123456789012345678901234567890123456789012345678901234567890123456789 IGMP protocol --------------------------------------------------------------------------Leave Time 10.0 Sec. Query Interval 125 Sec. Timeout Interval 120 Sec.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 36 Query Interval Interval at which Host Membership Queries are sent. Timeout Interval Interface Name Interval after which entries will be removed from the group database. VLAN reference. Multicast Router Recognized Multicast route. Group List Membership list for this VLAN. Group The group multicast address. “Multicast Filter” highlights members useful to stop Port where the member is attached. Port Last Adv.
IP 37 Table 14. Parameters displayed INTERFACE command.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 38 Figure 9. Example output from the SHOW NTP command. 01234567890123456789012345678901234567890123456789 NTP Module Information -------------------------------------------------General Current Time: CURRENT UTC Offset: OFFSET Last Update: UPDATE Last Delta: DELTA -----------------------------------------------Configured Servers State SERVER1 SERVER2 DEFAULT SERVER3 -------------------------------------------------- Table 15.
Chapter 3 DNS The AT-AR215 Residential VoIP gateway provides a DNS client module. A primary and secondary name server can be set; a static table can be configured and also an nslookup utility is provided Configuration Examples To configure a primary and a secondary DNS servers in the AT-RG213 use the commands: SET IP NAMESERVER=ipaddr SET IP SECONDARYNAMESERVER=ipaddr To retrieve the IP address of a certain host given its name (e.g. www.google.com) use the command: NSLOOKUP HOST=www.google.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 40 Command Reference SET DNS IP Syntax Short Syntax SET DNS IP HOST=hostname IPADDRESS=ipaddress S DNS IP HOST=hostname IPADDRESS=ipaddress where: hostname is a domain name as defined in ‘‘IETF RFC-1034, ‘Domain Names --Concepts and facilities’’’. It must be less or equal than 256 characters. ipaddress is an ip address in dotted decimal notation Description Examples This command adds or modifies a static entry in the host name table.
DNS 41 Short Syntax S IP NS=ipaddress where: ipaddress is an ip address in dotted decimal notation. Description Examples This command specifies the IP address of a host able to act as the primary name server. To specify the host with IP address 172.16.1.5 as a name server, use: SET IP NAMESERVER=172.16.1.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 42 option. The parameter value is returned as is, since this command invocation is designed for web interface. Examples To show only the primary name server IP address, type: SHOW DNS PRIP To show the entire configuration (Primary Name Server, Secondary Name Server and Domain) use: SHOW DNS See Also SET DNS IP Figure 10. Example output from SHOW DNS command.
Chapter 4 SIP Introduction This chapter describes the main features of the SIP standard, the protocols supported, the implementation of the call processes in the AT-RG213 and how to configure and operate the AT-RG213 to provide, or connect to, a VoIP Network. SIP Protocol SIP (Session Initiation Protocol) is a protocol developed to assist in providing advanced telephony services across the Internet.
44 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual (LDAP), to authenticate users (RADIUS, DIAMETER), and to scale to meet the anticipated growth curves. SIP is described as a control protocol for creating, modifying and terminating sessions with one or more participants. These sessions include Internet multimedia conferences, Internet (or any IP Network) telephone calls and multimedia distribution.
SIP 45 The SIP Server element also provides for more than one type of server. There are effectively three forms of server that can exist in the network - the SIP stateful proxy server, the SIP stateless proxy server and the SIP re-direct server. The main function of the SIP servers is to provide name resolution and user location, since the caller is unlikely to know the IP address or host name of the called party.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 46 • • • • • • • Callee and calling ʺnumberʺ delivery, where numbers can be any (preferably unique) naming scheme Personal mobility, i.e., the ability to reach a called party under a single, location-independent address even when the user changes terminals Terminal-type negotiation and selection: a caller can be given a choice how to reach the party, e.g., via Internet telephony, mobile phone, an answering service, etc.
SIP 47 SIP Messages A SIP request message consists of three elements: Request Line Header Message Body A SIP response message consists of three elements: Status Line Header Message Body The Request line and header field define the nature of the call in terms of services, addresses and protocol features. The message body is independent of the SIP protocol and can contain anything.
48 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Figure 12. Phone --> AT-RG213 (A) --> AT-RG213 (B) --> Phone A user makes a call with the phone connected to an AT-RG213, which in turn contacts another AT-RG213, then reaches the corresponding phone. Calls Involving a Terminal and a SIP Endpoint The following examples illustrate how a phone connected to an AT-RG213 terminal can communicate with a LAN SIP endpoint on the IP network.
SIP 49 Figure 13. Phone --> AT-RG213 (A)--> LAN SIP endpoint Exemple 2: LAN SIP endpoint --> AT-RG213 --> Phone A LAN SIP endpoint contacts the AT-RG213, which reaches the corresponding phone connected to the AT-RG213 terminal (see Figure 14).
50 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Figure 14. LAN SIP endpoint --> AT-RG213 --> Phone Configuration Examples Create and configure SIP Port To create and configure a SIP port, follow the steps below: Step 1: Enable SIP module: ENABLE SIP This command must be executed before any other command concerning this session Step 2: Create and configure the SIP protocol on a specific voice port and assign the telephone number.
SIP 51 CREATE SIP PORT=0 PHONENUMBER=1000 LOCATIONSERVER=192.168.0.10 PROXYSERVER=192.168.0.10 DOMAIN=alliedtelesyn.com CAPABILITY=ALL With CAPABILITY=ALL all supported voice codec are allowed (PCMU, PCMA and G723 ). Step 3: Test the correct configuration of the SIP ports: SHOW SIP PORT Step 4: Save the configuration for example in SIP.cfg: CREATE CONFIG=SIP.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 52 ipadd is an ip address in dotted decimal notation capability is the coding methods used when setting up a call. Currently PCMU, PCMA and G723 are supported. Use ALL to indicate all the above. username is a max 128 chars string used to authenticate the AT-RG213 with a proxy server that requires SIP authentication. password is a max 16 chars used to authenticate the AT-RG213 with a proxy server that requires SIP authentication.
SIP 53 USR=eurord@alliedtelesyn.com A-PWD=welcome PS=192.168.0.10 DO=alliedtelesyn.com LS=192.168.0.10 CAP=G723; PCMU DELETE SIP PORT Syntax Short Syntax DELETE SIP PORT=port D SIP PORT=port where: port is the physical port number (can be 0 or 1) Description Examples This command allows deleting a port from the SIP stack. Any ongoing call will be terminated as effect of command execution.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 54 and the PORT number that the SIP protocol will use for signalling. Examples To enable the SIP module behind a NAT with IP address 10.10.1.10 using 5050 as the signalling port: ENABLE SIP NATIP=10.10.1.
SIP 55 will be assigned dynamically. tospriority is a number from 0 to 7 dscppriority is a number from 0 to 63 Description This command allows to set different parameters of an already created port. For the option meaning please refer to the CREATE SIP PORT command.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 56 RTP port dynamic assignment ---------------------------------------------------------- Table 16. Parameters displayed in the output of the SHOW SIP PORT command.
Chapter 5 SNMP Introduction Simple Network Management Protocol (SNMP) The device can be monitored/configured with SNMP protocol via private mibs. The Simple Network Management Protocol (SNMP) is the network management protocol of choice for the Internet and IP-based internetworks. The SNMP protocol provides a mechanism for management entities, or stations, to extract information from the Management Information Base (MIB) of a managed device.
58 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Communities and Views A community is a relationship between an NMS and an agent. The community name is used like a password for a trivial authentication scheme. An SNMP MIB view is a arbitrary subset of objects in the MIB. Objects in the view may be from any part of the object name space, and not necessarily the same sub-tree.
SNMP 59 Step 3: Check the configuration. To check that the current configuration of the SNMP communities matches the desired configuration: SHOW SNMP Command Reference DISABLE SNMP Syntax Short Syntax Description Examples DISABLE SNMP DIS SNMP This command disables the SNMP module and frees all the allocated resources. To disable the SNMP module: DISABLE SNMP ENABLE SNMP Syntax Short Syntax Description Examples ENABLE SNMP EN SNMP This command enables the SNMP module.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 60 name is the name of specified community (can be any alphanumeric string) which serves as a password for either retrieving (GET), modifying (SET) or accepting trap messages (TRAP). The maximum number of characters is 200. Description Examples This command sets one COMMUNITY name at time. If these community names are not defined, SNMP module cannot work, being unable to manage SNMP command.
SNMP 61 SNMP Information -------------------------------------------------Set Community private Get Community public Trap Community public Manager 192.160.0.11 -------------------------------------------------- Table 17. Parameters displayed in the output of the SHOW SNMP command. Parameter STATUS SET GET TRAP MANAGER Meaning The module can be in the ENABLED or DISABLED state Set community name, e.g. private Get community get name, e.g. public Trap community name e.g.
Chapter 6 L2TP L2TP Introduction L2TP is a real tunneling protocol, much more elaborate protocol than other tunneling protocols i.e. GRE. There are multiple levels of negotiation at the connection setup time – a tunnel is negotiated, and then a call is negotiated within the tunnel, and then a PPP link is negotiated within the call. Basically, the purpose of L2TP is to tunnel a PPP link across the Internet.
L2TP 63 Figure 17. L2TP network model L2TP / LAC RG Private Network Telephone Public Network Router IBM Compatible L2TP Tunnel L2TP / LNS Router Private Network Host IBM Compatible Command Reference ENABLE L2TP Syntax Short Syntax Description Examples ENABLE L2TP EN L2TP This command enables the L2TP module. This must be called before any other command of this section.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 64 DISABLE L2TP Syntax Short Syntax Description Examples DISABLE L2TP DIS L2TP This command disables the L2TP module, closes session and tunnel active and release all the allocated resources.
L2TP 65 20.20.20.1 vand the remote L2TP server with IP address 20.20.20.2, using the authentication password “test”, use the command: CREATE L2TP LNSIP=20.20.20.2 LOCALTUNNELIP=20.20.20.1 PASSWD=test See also ENABLE L2TP DISABLE L2TP DELETE L2TP SHOW L2TP DELETE L2TP Syntax DELETE L2TP LNSIP=ipaddr LOCALTUNNELIP=ipaddr [PASSWD=passwd] where: ipaddr : is an IP address in dotted decimal notation.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 66 Examples To see the L2TP tunnel configuration and its status, use the command: SHOW L2TP See also ENABLE L2TP DISABLE L2TP Figure 18. Example output from the SHOW L2TP command L2TP Configuration -------------------------------------------------Enabled Session Created LNS IP 20.20.20.2 Configured Tunnel IP 20.20.20.1 Negotiated Tunnel IP 20.20.20.1 Remote Tunnel IP 20.20.20.
Chapter 7 Phone Introduction to FXS Ports A Foreign Exchange Station (FXS) interface connects directly to a standard analog telephone, fax machine or similar device and supplies ring, voltage and dial tone. In AT-RG213, FXS ports are assigned to tel1 and tel2, that correspond respectively to physical port 0 and 1 and support only analog telephones.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 68 Table 19.
Phone 69 Note 0 If the PSTN line is the default mode and PSTN line is used by one port, then off hooking the other phone the user will hear a busy tone. In order to make a VoIP call it will be needed to digit the set prefix. Note 1 In this case, if the AT-RG213 has an incoming PSTN call, it will signal the incoming PSTN call using a tone that is ON by default (a parameter in the SET phone command will permit to modify this default CWAITT from ON to OFF).
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 70 parameter in the SET phone command will permit to modify this default CWAITT from ON to OFF).
Phone 71 Each tone can and must be customized for the specific country. The parameters that can be used to define the above-mentioned tones are: On time in milliseconds (0-5000) Off time in milliseconds (0-5000) Frequency in Hertz (20-1000) The default values used for each tones in Italy are shown in Table 21 while Figure 20 shows the respective Frequency/Time graphs. Table 21.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 72 Port Impedance The FXS port impedance must match the phone one to guarantee the maximum quality and avoid annoying echo. The Table 22 shows the equivalent circuits that can be configured for the FXS ports and their corresponding name. Table 22. FXS Port equivalent circuits Tone Name Description 600r 600 Ω 600c 2.2 µF 600 Ω 2.
Phone 73 Their default values are: Buffer Length 120 msec Threshold 0 msec Figure 21. RTP Packet receive path Network DSP Telephone Circular Buffer Voice Activation and Silence Detection The DSP can detect silence and avoid sending packets to the network when the phone user is not talking. This minimizes network traffic but a confort noise must be generated on the remote end to make the remote party understand that the call is ongoing. This feature can be disable/enabled.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 74 Example 3 To modify the prefix used to change from the set network to the other one (in this example from VOIP to PSTN), type the command: SET PHONE PORT=0 PREFIX=# After the execution of this command, to make a PSTN call when VOIP is set as default, simply type the #. key on the phone.
Phone 75 toff a time interval expressed in msec within 0,5000 range rfreq a frequency expressed in Hz within 16-70 range tfreq a frequency expressed in Hz within 20,1000 range gain expressed in dB within ---12,+12 range with 3 dB steps. impedance is the name of the interface equivalent circuit. The possible value are 600R, 600C, 900C, CPLX1 and CPLX2.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 76 when a call is already in progress and there is a new incoming call. The default values are (300, 5000) and 425 respectively. TXGAIN and RXGAIN are respectively the gain applied to the audio signal to and from the network. The default values are 0 dB. IMPEDANCE changes the FXS equivalent circuit that should match the connected phone one to guarantee the maximum quality and lowest line echo. The default value is 600R.
Phone 77 Short Syntax SH PHONE [PORT=port | RING | RINGFREQ | TRING | TRINGFREQ | TDIAL | TDIALFREQ | TBUSY | TBUSYFREQ | TDISC | TDISCFREQ | TWAIT | TWAITFREQ | TXGAIN | RXGAIN | IMPEDENCE | BUFFLEN | BUFFTHR | VAD | DIGITTOUT | LEC | DEFAULTCALL | PREFIX | CWAITT | CWAITD] where: port is the physical port number (can be 0 or 1) Description This command shows the phone ports configuration. To get information on all the ports the command must be used without any option.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 78 Call Wait Dur.
Phone 79 LEC LENGTH DEFAULT CALL PREFIX Line echo cancellation expressed in frames. Each frame is 0.125 usec. If PSTN a call without prefix is routed to PSTN, otherwise to VOIP This digit must be dialed before the number to route the call to the not standard one.
Chapter 8 Switch Introduction VLAN A Virtual LAN is a software-defined broadcast domain. The switch’s VLAN feature allows the network to be segmented by software management, improving network performance. Workstations, servers, and other network equipment connected to the switch can be grouped according to similar data and security requirements.
Switch 81 VLAN tagging provides the advantages of more efficient and flexible use of switch ports and network resources, while maintaining the level of security given by port-based VLANs. With VLAN tagging, a port can belong to several VLANs. A VLAN Identifier (VID) is defined for each VLAN, and this VID is used to switch traffic through a VLAN aware network so that frames are only transmitted on ports belonging to the VLAN. Vlan Tagging - 802.1Q The 802.1Q standard recommends the use of the 802.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 82 Figure 23. The VLAN field in the Ethernet file Preamble 64 bits Destination Address Source Address Type/ Length 48 bits 48 bits 16 bit s 0 x81-00 16 bits Frame Data CRC 32 bits 368 - 12000 User Priority CFI 3 bits 1 bits VID 12 bits Switch architecture The integrated Switch relays Ethernet packets among the three LAN ports (lan1, lan2 and lan3), WAN port (wan) and VoIP subsystem port (voip), as shown in Figure 24.
Switch 83 A tagged based VLAN switch determines the membership of a data frame by examining the tagged info in the packet received. A four-byte field in the header is used to identify the VLAN. This VLAN identification indicates what VLAN the frame belongs to. The AT-RG213 switch can use VLAN functionality both in upstreaming and downstream communication.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 84 PC to receive the packets. This VLAN is needed to allow traffic incoming and outgoing from PC to reach the network and vice versa. ADD VLAN=3 PORT=LAN3 FRAME=UNTAGGED ADD VLAN=3 PORT=WAN FRAME=TAGGED Command Reference ADD VLAN PORT Syntax ADD VLAN={vlanname|1..4094} PORT={port-list|ALL} [FRAME={TAGGED|UNTAGGED}] Short Syntax A VLAN={vlanname|1..
Switch 85 A port can be tagged for zero or more VLANs to which it belongs. A port cannot be tagged or untagged at the same time: the choice is exclusive. If you assign a port to a VLAN as untagged, only untagged setting will be permitted and if you assign a port to VLAN as tagged, only tagged setting will be permitted. Examples The default setting is UNTAGGED.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 86 See Also DELETE VLAN PORT Syntax Short Syntax DELETE VLAN={vlanname|1..4094} PORT={port-list|ALL} D VLAN={vlanname|1..4094} PORT={port-list|ALL} where: vlanname is a unique name for the VLAN, 1 to 15 characters in length. Valid characters are uppercase letters (A-Z), lowercase letters (a-z), digits (0-9) the underscore character (‘‘_’’), and the hyphen character (-). The vlanname cannot be a number or ALL.
Switch 87 The vlanname cannot be a number or ALL. Description Examples This command destroys the specified VLAN or all VLANs in the switch. The default VLAN, which has a numerical VLAN Identifier (VID) of 1, cannot be destroyed. If ALL is specified then all VLANs except the default VLAN are destroyed. A VLAN cannot be destroyed if ports still belong to it.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 88 DISABLE SWITCH PORT Syntax DISABLE SWITCH PORT={port-list|ALL} [FLOW={JAMMING| PAUSE}[,{PAUSE|JAMMING}]] Short Syntax DIS SWITCH PORT={port-list|ALL} [FLOW={JAM| PAUSE}[,{PAUSE|JAM}]] where: port-list is an identifier or a comma separated list of port identifiers. Port identifier could be: WAN, LAN1, LAN2 and LAN3.
Switch 89 See Also ENABLE SWITCH LEARNING Syntax Short Syntax Description Examples ENABLE SWITCH LEARNING EN SWITCH LEARN This command enables the dynamic learning and updating of the Forwarding Database. The default setting for the learning function is enabled.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 90 RESET SWITCH Syntax Short Syntax Description Examples RESET SWITCH RES SWITCH This command resets the switch module. All dynamic switch information is cleared. All ports are reset. All counters and timers are reset to zero.
Switch 91 Description Examples This command sets the threshold value of the ageing timer, after which a dynamic entry in the Forwarding Database is automatically removed. FAST corresponds to 800 µSec., while NORMAL is equal to 300 Sec.. The default value is 300 seconds (5 minutes).
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 92 per second. See the note below for important information about packet rate limiting. The default value for this parameter is NONE. The ability of the switch to limit packet reception rates for different classes of packets is dependent on the particular switch hardware. In particular, groups of ports may have to have the same limits set, and the same limit may be set for the different types of packets, depending on the hardware.
Switch 93 any other value is specified, the RCVLIMIT parameter will be set to the largest multiple of 32 inferior to the specified value The SPEED parameter specifies the configured line speed and duplex mode of the port(s). If AUTONEGOTIATE is specified, the port(s) will autonegotiate the line speed and duplex mode with the device attached to the port if the port does not belong to a trunk group. If any other option is specified, the port(s) will be forced to the speed and duplex mode given.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 94 SET SWITCH QOS DSCP=24,37 PRI=HIGH See Also SHOW SWITCH Syntax Short Syntax Description Examples SHOW SWITCH SH SWITCH This command displays configuration information for the switch functions. To display the configuration of the switch module, use the command: SHOW SWITCH See Also Figure 25. Example output from the SHOW SWITCH command.
Switch 95 [PORT={port-list|ALL}] | [VLAN={vlanname|1..4094}]] Where: macadd is an Ethernet six-octet MAC address, expressed as six pairs of hexadecimal digits delimited by hyphen port-list is an identifier or a comma separated list of port identifiers. Port identifier could be: VOIP, WAN, LAN1, LAN2 and LAN3. vlanname is a unique name for the VLAN, 1 to 15 characters in length.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 96 MAC Address Port Status The MAC address as learned from the source address field of a frame, or entered as part of a static filter entry. The port from which the MAC address was learned. Whether the entry was a static filter entry or dynamically learned; one of “dynamic” or “static”.
Switch 97 Table 26. Parameters displayed in the output of the SHOW SWITCH PORT command. Parameter Meaning Port Port reference. Description A description of the port. Status The state of the port; one of “ENABLED” or “DISABLED”. The link state of the port, one of “Up” or “Down”. The count in hours:minutes:seconds of the elapsed time since the port was last reset or initialised. The MAC entity type.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 98 SHOW SWITCH PORT COUNTER Syntax Short Syntax SHOW SWITCH PORT={port-list|ALL} COUNTER SH SWITCH PORT={port-list|ALL} CNT Where: port-list is an identifier or a comma separated list of port identifiers. Port identifier could be: VOIP, WAN, LAN1, LAN2 and LAN3. Description Examples This command displays information about the forwarding counters associated with the switch.
Switch 99 Table 27. Parameters displayed in the output of the SHOW SWITCH PORT COUNTER command. Parameter Combined receive/transmit packets by size (octets) counter 64 65 – 127 128 – 255 256 – 511 512 – 1023 1024 – 1522 Meaning The number of packetsin each size range received and tranmitted. Number of 64 octet packets received and transmitted. Number of 65 - 127 octet packets received and transmitted. Number of 128 - 255 octet packets received and transmitted.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 100 PauseMACctlFrms The number of PAUSE MAC Control frames. FrameWDeferrdTx The number of frames deferred once before successful transmission. The number of frames which experienced exactly one collision. The number of frames which experienced 2 to 15 collisions (including late collisions). The number of frames which experienced late collisions. The number of frames aborted before transmission after 16 collisions.
Switch 101 Table 28. Parameters displayed in the output of the SHOW SWITCH QOS command. Parameter Meaning The map shows the High priority DSCP code. Priority Map SHOW VLAN Syntax SHOW VLAN={vlanname|1..4094|ALL} Short Syntax SH VLAN={vlanname|1..4094|ALL} Where: vlanname is a unique name for the VLAN, 1 to 15 characters in length. Valid characters are uppercase letters (A-Z), lowercase letters (a-z), digits (0-9) the underscore character (‘‘_’’), and the hyphen character (-).
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 102 Table 29. Parameters displayed in the output of the SHOW VLAN command. Parameter Name Identifier Status Untagged port(s) Tagged port(s) Meaning The name of the VLAN. The numerical VLAN identifier of the VLAN (VID). The status of the VLAN, either dynamic or static. A list of untagged ports that belong to the VLAN. A list of tagged ports that belong to the VLAN.
Glossary Symbols 802.2 The IEEE standard for the definition of the Logical Link Control protocol for LANs. 802.3 The IEEE standard for the definition of the CSMA/CD (Ethernet) medium access method for LANs. A ACK Acknowledgement. A packet sent to indicate that a block of data arrived at its destination without error.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 104 ANSI American National Standards Institute. An organisation responsible for coordinating and approving U.S. standards. Standards approved by ANSI are often called ANSI standards. ANSI is the U.S. representative to ISO. archive site A machine that provides access to a collection of files across the Internet. An “anonymous FTP archive site”, for example, provides access to this material via the FTP protocol. See anonymous FTP.
Glossary 105 C challenge/response An authentication technique whereby a server sends an unpredictable challenge to the user, who computes a response using some form of authentication token. checksum A small, integer value computed from a sequence of octets by treating them as integers and computing the sum. A checksum is used to detect transmission errors. The sender computes a checksum and appends it to a packet when transmitting.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 106 broadcast is routed to the specified network where it is broadcast to all machines on that network. DHCP Dynamic Host Configuration Protocol. TCP/IP protocol that enables PCs and workstations to get temporary or permanent IP addresses (out of a pool) from centrally-administered servers. DNS Domain Name System. The distributed name/address mechanism used in the Internet.
Glossary 107 ethernet A common, 10Mbps local area network technology invented by Xerox Corporation at the Palo Alto Research Center. Ethernet is a best-effort delivery system that uses CSMA/CD technology. Ethernet can be run over thinwire coaxial cable (10BASE2), thickwire coaxial cable (10BASE5), twisted pair cable (10BASET), or fibre optic cable. F FCS Frame check sequence. Bytes added to a frame so that the integrity of the frame may be checked. Typically the bytes are a CRC of the data in the frame.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 108 usually the name of the program that the user invokes to execute the protocol. See anonymous FTP. G G.711 ITU-T recommendation for an algorithm designed to transmit and receive A-law PCM (Pulse Code Modulation) voice at digital bit rates of 48, 56, and 64 kbps. It is used for digital telephone sets on digital PBX and ISDN channels. G.723.1 A Codec that provides the greatest compression, 5.3 kbps or 6.
Glossary 109 I ICMP Internet Control Message Protocol. The TCP/IP protocol used to handle errors and control messages at the IP layer. ICMP is part of the IP protocol. Gateways, routers and hosts use ICMP to send reports of problems about datagrams back to the original source that sent the datagram. IEEE Institute of Electrical and Electronics Engineers. A standard-making body in the U.S. responsible for the 802 standards for local area networks. IEEE 802.3 See 802.3. IETF Internet Engineering Task Force.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 110 IP datagram The fundamental unit of information passed across the Internet. It contains a source and destination address along with data and a number of fields which define such things as the length of the datagram, the header checksum, and flags to say whether the datagram can be (or has been) fragmented.
Glossary 111 affecting the other layers. This greatly simplifies the task of designing and maintaining communication programs. layer 2 Interface An entity representing the layer 2 interface in the OSI/ISO network layering model, also referred to as a link layer interface. Examples are Ethernet, PPP, X.25 and Frame Relay. LED Light Emitting Diode. A luminous indicator. local interface A default logical interface for all locally generated IP packets.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 112 In firewall configurations, a multi homed gateway usually acts to block or filter some or all of the traffic trying to pass between the networks. multicast A special form of broadcast where copies of the packet are delivered to only a subset of all possible destinations. See broadcast, directed broadcast, unicast. N NAK Negative acknowledgement. A response sent to indicate unsuccessful reception of information.
Glossary 113 NVS Nonvolatile Storage. Static RAM that has its contents preserved through gateway power cycles through the use of a battery that maintains power to the RAM. O octet An octet is 8 bits. This term is used in networking, rather than byte,because some systems have bytes that are not 8 bits long. OSI Open Systems Interconnection. A suite of protocols, specifically ISO standards, to be the international standard computer network architecture. See ISO.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 114 operation of the system or the activities of other users. The router has two levels of privilege, MANAGER and USER. Users with USER privilege (most users) have access to a limited subset of the commands available to MANAGER level users. prompt A text string displayed on a terminal by a computer to indicate that it is ready to receive the next command from the user.
Glossary 115 RS-232 An EIA (Electronics Industry Association) standard that specifies the electrical characteristics of low speed interconnections between terminals and computers or between two computers. RTCP Real-time transport control protocol. Is the counterpart of RTP that provides control services. RTP Real-time transport protocol. Provides end-to-end delivery services of real-time audio and video.
AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual 116 synchronous Transmission in which the data characters and bits are transmitted at a fixed rate with the transmitter and receiver synchronised. This eliminates the need for start-stop elements, as in asynchronous transmission, but requires a flag character to be transmitted when there is no data to transmit. See asynchronous. T TCP Transmission Control Protocol.
Glossary 117 VoIP Voice Over Internet Protocol. The technology used to transmit voice conversations over a data network using the Internet Protocol. Such data network may be the Internet or a corporate Intranet. W WAN Wide Area Network. Any physical network technology that spans large geographic distances. WANs usually operate a slower speeds than LANs or MANs. See WAN. WWW World Wide Web. A hypertext-based, distributed information system based on a client-server architecture.
118 AT-RG213 Residential VoIP Gateway - SIP Software Reference Manual Index ADD NTP SERVER, 29 ADD VLAN PORT, 85 Addressing, 21 CLI, 2, 5, 6, 31, 48 Command Line Interface, 2.
Index SET IP IGMP, 31 SET IP INTERFACE, 33 SET IP NAMESERVER, 41 SET IP SECONDARYNAMESERVER, 41 SET LOADER, 12 SET NTP, 34 SET PASSWORD, 13 SET PHONE, 75 SET SIP PORT, 55 SET SNMP COMMUNITY, 60 SET SNMP MANAGER, 61 SET SWITCH AGEINGTIMER, 92 SET SWITCH PORT, 92 SET SWITCH QOS, 94 SET SYSTEM, 13 SHOW CONFIG, 14 SHOW DNS, 41, 56 SHOW IP HOST, 42 SHOW IP IGMP, 35 SHOW IP INTERFACE, 36 SHOW L2TP, 66 SHOW LOADER, 15 SHOW NTP, 37 SHOW PHONE, 77 119 SHOW SIP PORT, 56 SHOW SNMP, 61 SHOW SWITCH, 95 SHOW SWITCH FDB,
