User`s guide

Chapter 11 The Service Configuration Screens
User’s Guide
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Active Select this if you want the WiMAX Modem to send SIP traffic to a specific NAT
router. You must also configure the NAT router to forward traffic with the specified
port to the WiMAX Modem. This eliminates the need for STUN or a SIP ALG.
Server Address Enter the public IP address or domain name of the NAT router.
Server Port Enter the port number that your SIP sessions use with the public IP address of the
NAT router.
Outbound Proxy
Active Select this if your VoIP service provider has a SIP outbound server to handle voice
calls. This allows the WiMAX Modem to work with any type of NAT router and
eliminates the need for STUN or a SIP ALG. Turn off any SIP ALG on a NAT router
in front of the WiMAX Modem to keep it from re-translating the IP address (since
this is already handled by the outbound proxy server).
Server Address Enter the IP address or domain name of the SIP outbound proxy server.
Server Port Enter the SIP outbound proxy server’s listening port, if your VoIP service provider
gave you one. Otherwise, keep the default value.
NAT Keep Alive
Active Select this to stop NAT routers between the WiMAX Modem and SIP server (a SIP
proxy server or outbound proxy server) from dropping the SIP session. The
WiMAX Modem does this by sending SIP notify messages to the SIP server based
on the specified interval.
Keep Alive with
SIP Proxy
Select this if the SIP server is a SIP proxy server.
Keep Alive with
Outbound Proxy
Select this if the SIP server is an outbound proxy server. You must enable
Outbound Proxy to use this.
Keep Alive
Interval
Enter how often (in seconds) the WiMAX Modem should send SIP notify
messages to the SIP server.
MWI (Message Waiting Indication)
Enable Select this if you want to hear a waiting (beeping) dial tone on your phone when
you have at least one voice message. Your VoIP service provider must support
this feature.
Expiration Time Keep the default value, unless your VoIP service provider tells you to change it.
Enter the number of seconds the SIP server should provide the message waiting
service each time the WiMAX Modem subscribes to the service. Before this time
passes, the WiMAX Modem automatically subscribes again.
Fax Option
G.711 Fax
Passthrough
Select this if the WiMAX Modem should use G.711 to send fax messages. The
peer devices must also use G.711.
T.38 Fax Relay Select this if the WiMAX Modem should send fax messages as UDP or TCP/IP
packets through IP networks. This provides better quality, but it may have inter-
operability problems. The peer devices must also use T.38.
Call Forward
Call Forward
Table
Select which call forwarding table you want the WiMAX Modem to use for
incoming calls. You set up these tables in VOICE > Phone Book > Incoming Call
Policy.
Caller Ringing
Enable Check this box if you want people to hear a customized recording when they call
you.
Table 45 VOICE > Service Configuration > SIP Settings > Advanced (continued)
LABEL DESCRIPTION