As a test we built Asterisk v1.6.2.11 on a new server. This version of Asterisk
exhibits the same behavior. From ngrep's perspective we see an ACK followed
immediately by a BYE message. The user hears the recording being played, begins
to leave a message and is disconnected about 10 seconds into the call.
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces
at lists.digium.com] On Behalf Of Steven C. Blair
Sent: Wednesday, August 25, 2010 2:08 PM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Asterisk 1.6.1.17 ACK/BYE question
We're running Asterisk 1.6.1.17 for our campus voicemail server and
Juniper M120s as our SBC. Unanswered calls, which arrive via the SBC, are
diverted to voicemail using a 302 redirect when the called party doesn't
answer. In this case the caller is able to hear the greetings and begin to leave
a message only to have Asterisk terminate the call mid-recording.
We're uncertain why this is happening and this is where we are hoping you
can help. In our environment the caller is any set on the PSTN. They call one of
our IP phones which no one answers. Our proxy, SER, responds to the SBC with a
302 redirect and the call is diverted to Asterisk. The caller hears the
unavailable greeting for 6-4050, begins to leave a message and is cut-off after
about 10 seconds. In an ngrep trace we see Asterisk receive an ACK from the SBC
and it immediately responds with a BYE message for that call.
Has anyone else experienced this type of issue?
---
ISC Networking & Telecommunications
3401 Walnut Street, Suite 221A
Philadelphia, PA 19104
215-573-8396
215-898-9348 (fax)
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