AudioCodes Mediant 500 E-SBC User Manual page 547

User's Manual
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Figure 38-1: Configuring Dial Plan File Label for IP-to-Tel Routing
4. Configure manipulation rules to remove the prefix called tags:
a. Open the Destination Phone Number Manipulation Table for IP-to-Tel Calls table
(Configuration tab > VoIP menu > GW and IP to IP > Manipulations > Dest
Number IP->Tel).
b. In the 'Destination Prefix' field, enter the prefix called tag (e.g., "LOCL").
c. In the 'Stripped Digits From Left' field, enter the number of characters in the prefix
called tag (e.g., "4").
5. Configure manipulation rules to remove the prefix calling tags:
a. Open the Source Phone Number Manipulation Table for IP-to-Tel Calls table
(Configuration tab > VoIP menu > GW and IP to IP > Manipulations > Source
Number IP->Tel).
b. In the 'Source Prefix' field, enter the prefix calling tag.
c. In the 'Stripped Digits From Left' field, enter the number of characters in the prefix
calling tag.
38.1.4.3.2 Dial Plan Prefix Tags for SBC IP-to-IP Routing
For deployments requiring many SBC IP-to-IP routing rules that exceed the maximum
number of rules that can be configured in the IP-to-IP Routing table, you can employ user-
defined string labels (tags) to represent the many different prefix calling (source) and called
(destination) numbers. The prefix tags are used in the IP-to-IP Routing table (see
''Configuring SBC IP-to-IP Routing Rules'' on page 477) as source and destination URI
user parts matching characteristics for the routing rule. Prefix tags are typically
implemented when you have calls of many different called or calling numbers that need to
be routed to the same destination. Thus, instead of configuring a routing rule for each
prefix number, you need to configure only one routing rule using the prefix tag.
For example, this feature is useful in deployments that need to handle hundreds of call
routing scenarios such as for a large geographical area (a state in the US). Such an area
could consist of hundreds of local area codes as well as codes for international calls. The
local calls and international calls would need to be routed to different SIP trunks. Thus,
instead of configuring many routing rules for each call destination type, you can simply
configure two routing rules, one with a unique prefix tag representing the different local
area codes and the other with a prefix tag representing international calls.
Note:
tags before the device sends the calls to their destinations.
Version 6.8
Prefix tags for calling number prefixes: 'Source Phone Prefix'.
When using prefix tags, you need to configure manipulation rules to remove the
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38. Software Upgrade
Mediant 500 E-SBC