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Community Member

SIP to SIP calling when transfered by CME

I have a CME enviroment with two SIP trunks

1 to the PSTN

1 to my MS Lync server

Calls from PSTN to Lync : OK. Using CME as a middle man

Calls from PSTN to Cisco handsets: OK

Calls from the PSTN to Cisco handset then transfered to Lync fail. How do I enable this?

The resaon I noticed this is I am using Lyncs dial in feature, Lync answers, accepts my conference ID then fails to connect me to the conference.

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Community Member

SIP to SIP calling when transfered by CME

Update:

I have fixed the call tranfers turns out to be a missmatch in the Codecs.

But I still have an issue where my PSTN calls hit Lync, go through the Audio prompts then fail to transfer to the conference.

If I do a PSTN call to the Cisco handset then tranfer to the lync auto attendant, once I complete the audio prompts I can connect the PSTN to the Lync conference and it works fine.

Heres the errors when dialing direct from PSTN to Lync dialin

089355: *Sep 30 13:53:17.293 UTC: //11400/6AC30233B034/SIP/Msg/ccsipDisplayMsg:

Received:

SIP/2.0 401 Unauthorized

Via: SIP/2.0/UDP 62.xxx.xxx.35:5060;branch=z9hG4bK1B019CF;rport=65475;received=62.xxx.xxx.35

From: ;tag=153EAF84-EFD

To: "nnnnn85505";tag=as365ee679

Call-ID:

7e7723c37ee39d3052a31b105892c65d@78.xxx.xxx.249

CSeq: 101 INVITE

WWW-Authenticate: Digest realm="78.xxx.xxx.249", nonce="524985fc001b07ca839d4ffeb38dbf14fd187a2ee4b79280"

Server: VoipNow

Content-Length: 0 089355: *Sep 30 13:53:17.293 UTC: //11400/6AC30233B034/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 62.xxx..xxx..35:5060;branch=z9hG4bK1B019CF;rport=65475;received=62.xxx.xxx.35
From: 574348@78.xxx.xxx.249:5060>;tag=153EAF84-EFD
To: "nnnnn85505"85505@78.xxx.xxx.249>;tag=as365ee679
Call-ID: 7e7723c37ee39d3052a31b105892c65d@78.xxx.xxx.249
CSeq: 101 INVITE
WWW-Authenticate: Digest realm="78.xxx.xxx.249", nonce="524985fc001b07ca839d4ffeb38dbf14fd187a2ee4b79280"
Server: VoipNow
Content-Length: 0

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