Nortel Networks TP-1610 SIP To configure the Tel to IP Routing table, take these 6 steps

Mediant 2000 SIP

Alternative Routing’ table, the gateway immediately initiates a call to the redundant destination using the next matched entry in the ‘Tel to IP Routing’ table. Note that if a domain name in this table is resolved to two IP addresses, the timeout for Invite retransmissions can be reduced by using the parameter ‘Number of RTX Before Hotswap’.

Note: If the alternative routing destination is the gateway itself, the call can be configured to be routed back to PSTN. This feature is referred to as "PSTN Fallback", meaning that if sufficient voice quality is not available over the IP network, the call is routed through legacy telephony system (PSTN).

Tip: Tel to IP routing can be performed either before or after applying the number manipulation rules. To control when number manipulation is done, set the RouteModeTel2IP parameter. For information on this parameter, refer to refer to Table 6-5on page 115.

To configure the Tel to IP Routing table, take these 6 steps:

1.Open the ‘Tel to IP Routing’ screen (Protocol Management menu > Routing Tables submenu > Tel to IP Routing option); the ‘Tel to IP Routing’ screen is displayed (shown in Figure 5-5).

2.In the ‘Tel to IP Routing Mode’ field, select the Tel to IP routing mode (refer to Table 6-5).

3.In the ‘Routing Index' drop-down list, select the range of entries that you want to edit.

4.Configure the Tel to IP Routing table according to Table 5-3.

5.Click the Submit button to save your changes.

6.To save the changes so they are available after a power fail, refer to Section 5.12 on page 84.

Figure 5-5: Tel to IP Routing Table Screen

	Table 5-3: Tel to IP Routing Table
Parameter	Description
Destination Phone Prefix	Each entry in the Destination Phone Prefix fields represents a called telephone
	number prefix. The prefix can be 1 to 19 digits long. An asterisk (*) represents all
	numbers.
Source Phone Prefix	Each entry in the Source Phone Prefix fields represents a calling telephone number
	prefix. The prefix can be 1 to 19 digits long. An asterisk (*) represents all numbers.

Mediant 2000 SIP User’s Manual 50 Document #: LTRT-72504