[Asterisk-Users] Polycom IP600 Cannot answer

[MDS]

I googled and googled but could not find anything regarding this problem.

I have Asterisk CVS-HEAD-03/19/05. been running Asterisk for over 6
months, no problems with my grandstreams. I'm fairly familiar with the
ins and outs of asterisk...

IP600 with latest sip 1.4.1 and bootrom from my FTP server.
Standard config files from http://www.freedomphones.net/polycom/files/
No changes other than typical ip address of phone and server.

Grandstream (192.168.2.20) is exten 2000, Polycom (192.168.2.22) is 2006.


I can make calls out to my Grandstreams from the Polycom all day. No
problem.
When I try to call the Polycom I get this stuff:
    -- Executing Dial("SIP/2000-972f", "SIP/2006|10|r") in new stack
    -- Called 2006
    -- SIP/2006-f8ea is ringing
    -- SIP/2006-f8ea answered SIP/2000-972f
    -- Attempting native bridge of SIP/2000-972f and SIP/2006-f8ea
    -- Got SIP response 481 "No Such Call" back from 192.168.2.20
  == Spawn extension (from-sip, 2006, 1) exited non-zero on 'SIP/2000-972f'
    -- Got SIP response 500 "Internal Server Error" back from 192.168.2.22
    -- Got SIP response 500 "Internal Server Error" back from 192.168.2.22

When I answer the polycom it just hangs up and hangs the grandstream
online. I have to manually hang up the grandstream. It doesn't get a SIP
notifcation of call failure or hangup.

When I tcpdump the asterisk box, I can see RTP streams from the
Grandstream toward the server. But nothing coming from or toward the
Polycom. When I call the Grandstream from the Polycom, the call connects
and I see both RTP streams to and from the Asterisk box for both phones
and everything is happy.

anyone have any ideas as to why inbound calls fail?

I've tried several combinations of
friend/peer/progressinband/canreinvite etc... No change at all.

Here's my sip.conf for the Polycom
[2006]
type=friend
username=2006
secret=2006
host=dynamic
dtmfmode=rfc2833
defaultip=192.168.2.22
progressinband=no
context=from-sip
mailbox=2006 at local
callgroup=1
pickupgroup=1


thank you for any insight!

Mark