I have several systems in the field using Gamma SIP trunks. They all seem to be having an issue displaying their CLI when calling any international party. I have spoken to Gamma who have informed me that they need to see the P asserted ID in the header. I have tried turning this on in the SIP Line section on the system and this hasn't worked. I have also tried playing around with the SIP URI field.....Still no joy.....

Has anyone else had this problem? If so what was the solution? Any help would be greatly appreciated.

Thanks guys

Gamma SIP trunks are rubbish.

How is your URI and ARS formed?

why are they using the PAI to send CLI?

here is how SIP should be sending CLI

http://www.cisco.com/en/US/docs/ios/12_4t/12_4t4/F...

ACSS - SME
General Geek

The URI is programmed to use internal Data in all sections. And the CLI is configured in the User/SIP section. The CLIP work fine for UK calls but not for international, it displays "anonymous". Gamma have told me in order for international carriers to display the CLI the PAI needs to be included in the header packect. This is the output I am getting on the system monitor when trying to call and international number. I have masked some of the details for anonymity, but they are all present and correct.

SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 188.223.91.xxx:5060;rport=5060;received=188.223.91.xxx;branch=z9hG4bKa17da1fbcb11774401e3969080c47cac
To: <sip:0034671440xxx@83.245.6.81>;tag=3551768946-118963
From: "01920450xxx" <sip:1920450xxx@83.245.6.81>;tag=834e8519a98ada41
Call-ID: c456fa2913291cbc0aee139b09de85e2@188.223.91.xxx
CSeq: 212861281 INVITE
Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE, MESSAGE, PUBLISH
Contact: <sip:0034671440xxx@83.245.6.81:5060>
Allow-Events: telephone-event
Content-Type: application/sdp
Accept: application/sdp
Content-Length: 154

What am I missing?