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To configure basic SIP parameters, follow these 9 steps:
1 If the V7111 is connected to a router with NAT enabled, perform the following procedure.
If it isn’t, leave the ‘NAT IP Address’ field undefined.
Determine the “public” IP address assigned to the router (by using, for instance,
router Web management). Enter this public IP address in the ‘NAT IP Address’ field.
Enable the DMZ configuration on the residential router for the LAN port where the
V7111 gateway is connected. This enables unknown packets to be routed to the
DMZ port.
2 Under ‘SIP Parameters’, enter the V7111 Domain Name in the field ‘Gateway Name’. If
the field is not specified, the V7111 IP address is used instead (default).
3 When working with a Proxy server, set ‘Working with Proxy’ field to ‘Yes’ and enter the IP
address of the primary Proxy server in the field ‘Proxy IP Address’. When no Proxy is
used, the internal routing table is used to route the calls.
4 Enter the Proxy Name in the field ‘Proxy Name’. If Proxy name is used, it replaces the
Proxy IP address in all SIP messages. This means that messages are still sent to the
physical Proxy IP address but the SIP URI contains the Proxy name instead.
5 Configure ‘Enable Registration’ to ‘Yes’ or ‘No’:
‘No’ = the V7111 does not register to a Proxy server/Registrar (default).
‘Yes’ = the V7111 registers to a Proxy server/Registrar at power up and every
‘Registration Time’ seconds; The V7111 sends a register request for each channel or for
the entire gateway (according to the ‘Authentication Mode’ parameter). For detailed
information on the parameters ‘Registration Time’ and ‘Authentication Mode’, refer to the
V7111 SIP User’s Manual.
6 Select the coder (i.e., vocoder) that best suits your VoIP system requirements. The
default coder is: G.723.1 30 msec. To program the entire list of coders you want the
V7111 to use, refer to the V7111 User’s Manual.
7 Map outgoing calls to IP addresses (when Proxy isn’t used) by completing these steps:
Click the arrow button next to the ‘Tel to IP Routing Table’ label; the ‘Tel to IP
Routing’ screen opens.
Any telephone number whose destination number matches the prefix defined in the
‘Destination Phone Prefix’ field and whose source number matches the prefix defined
in the adjacent ‘Source Phone Prefix‘ field, is sent to the IP address entered in the ‘IP
Address’ field.
Click the Submit button; the ‘Tel to IP Routing’ table is automatically updated.
Click Quick Setup; you’re returned to the ‘Quick Setup’ screen.
For more information on the ‘Tel to IP Routing’ table refer to the V7111 SIP User’s
Manual.
3Com VCX V7111 Analog Gateway Installation Guide 37