Version 6.2 579 February 2011
SIP User's Manual 8. IP Telephony Capabilities
8.4.10.7.2 Step 2: Manipulate SIP URI User Part
The procedure below describes how to configure a manipulation rule for the SIP URI user
part. In this manipulation, the destination URI user name prefix "976" in SIP INVITE
messages sent from the LAN users IP Group #1 is removed (i.e., "976") in the outgoing
INVITE to the WAN IP-PBX.
¾ To configure manipulation of SIP URI user part:
1. Open the 'IP2IP Inbound Manipulation' page (Configuration tab > VoIP menu > SBC
submenu > Manipulations SBC submenu > IP to IP Inbound).
2. From the 'Manipulated URI' drop-down list, select 'Destination'. This indicates that
manipulation is done on the destination SIP URI user part.
3. In the 'Source IP Group' field, enter '1'. This is the IP Group of the LAN IP Phones.
4. In the 'Destination Username Prefix' field, enter the destination SIP URI user part
prefix that you want manipulated (i.e., "976").
5. From the 'Request Type' drop-down list, select 'INVITE' to apply this rule only to SIP
INVITE messages.
6. In the 'Remove From Left' field, enter the number of digits that you want removed from
the prefix (i.e., '3', to remove "976").
Figure 8-96: Manipulation of SIP URI User Part
7. Click Apply.
8.4.10.8 SIP Header Manipulation
This section provides an example on how to configure a SIP message manipulation rule
that adds a P-Asserted-Identity header with the user part from the From header, to all
received (inbound) INVITE messages. For example, if the device receives an INVITE from
user "1000", it adds a P-Asserted-Identity header to the sent INVITE with the value
"1000@msbg.com". Therefore, the caller ID displayed to the remote User Agent
is"1000@msbg.com".
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