Hello, I am having a problem with getting call transfer to work.

 

This is what is happening:-

 

1)      External call comes in on SIP from a DDI provider

2)      The call is answered by extension 204

3)      Then extension 204 presses the Xfer button and the call is
placed on hold

4)      Extension 204 calls extension 201 and speaks to them.

5)      Extension 204 presses the xfer button again to complete the
transfer.

 

The result is that the caller is cut off and the SIP Debug in asterisk
shows the following:-

SIP/2.0 481 Call leg/transaction does not exist

 

 

Below is a clip from the debug list.


I would greatly appreciate any help as the client is getting annoyed.

 

Regards

Dan

 

<------------>

    -- Packet2Packet bridging SIP/winsor_204-12cb4160 and
SIP/winsor_201-12ca50b0

sip1*CLI>

<--- SIP read from 94.193.81.135:49160 --->

ACK sip:2...@83.222.226.126 SIP/2.0

Via: SIP/2.0/UDP 94.193.81.135:49160;branch=z9hG4bK-9ba5b149

From: "Rachael"
<sip:winsor_...@sip1.keshercommunications.com>;tag=127e2c656448055eo0

To: "Robert" <sip:2...@sip1.keshercommunications.com>;tag=as1db0f5fd

Call-ID: 5060f231-68791...@94.193.81.135

CSeq: 102 ACK

Max-Forwards: 70

Proxy-Authorization: Digest
username="winsor_204",realm="asterisk",nonce="24eede11",uri="sip:2...@83.
222.226.126",algorithm=MD5,response="a3b443415fd656ce42253002548a823a"

Contact: "Rachael" <sip:winsor_...@94.193.81.135:49160>

User-Agent: Sipura/SPA921-4.1.10(b)

Content-Length: 0

 

 

<------------->

--- (11 headers 0 lines) ---

sip1*CLI>

<--- SIP read from 94.193.81.135:49160 --->

REFER sip:901617720...@83.222.226.126 SIP/2.0

Via: SIP/2.0/UDP 94.193.81.135:49160;branch=z9hG4bK-5479aeea

From: <sip:winsor_...@94.193.81.135:49160>;tag=f2c2287b333442fi0

To: "01617720007" <sip:901617720...@83.222.226.126>;tag=as2eb45d54

Referred-By: "Rachael" <sip:winsor_...@sip1.keshercommunications.com>

Call-ID: 15dcfde333cdaf86302cb6490b04d...@83.222.226.126

CSeq: 102 REFER

Max-Forwards: 70

Contact: "Rachael" <sip:winsor_...@94.193.81.135:49160>

efer-To:
<sip:2...@83.222.226.126?replaces=5060f231%2d68791a02%4010%2e0%2e0%2e204%
3Bfrom-tag%3D127e2c656448055eo0%3Bto-tag%3Das1db0f5fd>

User-Agent: Sipura/SPA921-4.1.10(b)

Content-Length: 0

 

 

<------------->

--- (12 headers 0 lines) ---

Call 15dcfde333cdaf86302cb6490b04d...@83.222.226.126 got a SIP call
transfer from caller: (REFER)!

SIP transfer to extension 2...@winsor_phones by
winsor_...@sip1.keshercommunications.com

 

<--- Transmitting (NAT) to 94.193.81.135:49160 --->

SIP/2.0 202 Accepted

Via: SIP/2.0/UDP
94.193.81.135:49160;branch=z9hG4bK-5479aeea;received=94.193.81.135

From: <sip:winsor_...@94.193.81.135:49160>;tag=f2c2287b333442fi0

To: "01617720007" <sip:901617720...@83.222.226.126>;tag=as2eb45d54

Call-ID: 15dcfde333cdaf86302cb6490b04d...@83.222.226.126

CSeq: 102 REFER

User-Agent: Asterisk PBX

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO

Supported: replaces

Contact: <sip:901617720...@83.222.226.126>

Content-Length: 0

 

 

<------------>

set_destination: Parsing <sip:winsor_...@94.193.81.135:49160> for
address/port to send to

set_destination: set destination to 94.193.81.135, port 49160

Reliably Transmitting (NAT) to 94.193.81.135:49160:

NOTIFY sip:winsor_...@94.193.81.135:49160 SIP/2.0

Via: SIP/2.0/UDP 83.222.226.126:5060;branch=z9hG4bK2e10dade;rport

From: "01617720007" <sip:901617720...@83.222.226.126>;tag=as2eb45d54

To: <sip:winsor_...@94.193.81.135:49160>;tag=f2c2287b333442fi0

Contact: <sip:901617720...@83.222.226.126>

Call-ID: 15dcfde333cdaf86302cb6490b04d...@83.222.226.126

CSeq: 103 NOTIFY

User-Agent: Asterisk PBX

Max-Forwards: 70

Remote-Party-ID: "01617720007"
<sip:901617720...@83.222.226.126>;privacy=off;screen=no

Event: refer;id=102

Subscription-state: terminated;reason=noresource

Content-Type: message/sipfrag;version=2.0

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO

Supported: replaces

Content-Length: 49

 

SIP/2.0 481 Call leg/transaction does not exist

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