Cisco Callmanager Express & Caller-ID

Joined: Thu 15 of Apr, 2010

Cisco Callmanager Express & Caller-ID

Posted:Thu 15 of Apr, 2010 (07:22 UTC)
Here is a little problem:
We have a Cisco IP Phone 7941 connected by SCCP to Cisco 2811 (CCME 4.0) and a SIP-trunk to PSTN
When a call placed from IP Phone to PSTN, deb ccsip messages from Cisco 2811 cause:

SIP/2.0 403 Forbidden
From: "link"<>;tag=1379030-56F
To: <>;tag=1333132395
Call-ID: C1DED6A8-462211DF-829A87CB-81AB91DE@
CSeq: 101 INVITE
Via: SIP/2.0/UDP;branch=z9hG4bK7279C
contact: <;maddr=>
supported: com.nortelnetworks.firewall,p-3rdpartycontrol,nosec,join
timestamp: 1271156493
Content-Length: 0

In explanation from SIP provider field FROM must contain a SIP-login like
From: "link"<>

Does anybody knows, how to changing SIP URI from local Ip Phone number to SIP credentials username parameter or any other not alphanumeric?