Try placing an Answer() as the first line in your extensions.conf for
your extensions you are transferring to.
Matt
Buffalo
Martin Glazer wrote:
Hi All,
We are running version 1.2.26 of Asterisk using Aastra 480i phones -
we are having problems doing blind (or unattended) transfers - what
happens when transferring is that the destination phone rings, we hit
transfer again and the call drops. If the person answers before we hit
transfer again (attended), then the transfer goes through.
We are using the transfer button on the Aastra's.
In the logs, I see this message (transfer from 7900 to 7303)
2009-08-26 12:22:12 DEBUG[15287] chan_sip.c: Unsupervised transfer to
(Refer-To): 7303
2009-08-26 12:22:12 DEBUG[15287] chan_sip.c: Transferred by
(Referred-by: ) 7900
2009-08-26 12:22:12 DEBUG[15287] chan_sip.c: Transfer Contact Info
My-Company <sip:[email protected];transport=udp> (REFER_CONTACT)
2009-08-26 12:22:12 DEBUG[15287] chan_sip.c: 202 Accepted (blind)
2009-08-26 12:22:12 DEBUG[15287] chan_sip.c: Got SIP blind transfer
but nothing to transfer to.
2009-08-26 12:22:12 DEBUG[31400] channel.c: Scheduling timer at 0
sample intervals
From my limited knowledge, in a SIP trace, it looks like the phone
requesting the transfer, cancels the request before the 2 phones are
connected - not sure why it would do this.
I've searched for the error in the logs, but not found any solutions.
Any thoughts or ideas in tracking this down?
Thanks
Martin
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Matt Mackes
Network Administrator
Delta Sonic Car Wash Systems
Buffalo, New York
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