User's Manual

• Extensions and users — A user is automatically created for each physical extension
port detected in the system. Users are assigned extension numbers starting from 201.
User names take the form Extn201, Extn202, etc.
• Hunt group — A single hunt group 200 called Main is created and the first 10 users are
placed into that hunt group as members.
• Incoming call routes — Two default incoming call routes are created. Voice calls are
routed to the hunt group Main. Data calls are routed to the RAS user DialIn.
• Default short codes — A-Law or U-Law variant operation is determined by the Feature
Key installed in the control unit. Depending on the variant, different short codes and trunk
settings are added to the default configuration.
• A-Law or Mu-Law — Pulse Code Modulation (PCM) is a method for encoding voice as
data. In telephony, two methods of PCM encoding are widely used, A-law and Mu-law
(also called U-law). Typically Mu-law is used in North America and a few other locations
while A-law is used by the rest of the world. As well as setting the correct PCM encoding
for the region, the A-Law or Mu-Law setting of a B5800 Branch Gateway system when it
is first started affects a wide range of regional defaults relating to line settings and other
values. The encoding default is set by the type of Feature Key installed when the system
is first started.
Default DHCP/IP address settings
When a defaulted or new B5800 Branch Gateway control unit is switched on, it requests IP
address information from a DHCP server on the network. This operation will occur whether the
LAN cable is plugged in or not. The process below is done separately for both the LAN port
(LAN1 in the configuration) and the WAN port (LAN2 in the configuration) on the back of the
control unit.
• The B5800 Branch Gateway makes a DHCP request for what IP address information it
should use.
• If a DHCP server responds within approximately 10 seconds, the control unit defaults to
being a DHCP client and uses the IP address information supplied by the DHCP server.
Note:
For this installation, we have not yet connected the control unit to the network so a
DHCP server will not respond.
• If a DHCP server does not respond, the control unit defaults to being the DHCP server
for the LAN using the following settings:
• For its LAN1 it allocates the IP address 192.168.42.1 and IP Mask 255.255.255.0.
It supports 200 DHCP clients using the addresses range 192.168.42.2 and
192.168.42.201, the IP Mask 255.255.255.0 and default gateway address
192.168.42.1 (the control unit LAN1 address).
• For its LAN2 if supported, it allocates the IP address 192.168.43.1 and IP Mask
255.255.255.0.
• Note that the B5800 Branch Gateway does not check that these addresses are valid
and or available on the network.
Hardware and software installation
80 Implementing the Avaya B5800 Branch Gateway November 2011
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