[Asterisk-Users] Getting 488's between two c7940's

[Anton L. Kapela]

Greetings,

It appears that some time ago, another user or two experienced similar
trouble interacting w/ an ata186. For the sake of reference:

http://www.mail-archive.com/asterisk-users@lists.digium.com/msg00788.html

It seems like this issue was fixed at the time, any quite possibly
this problem here is unrelated.

In any case, I'm using a debian-testing system, gcc3.3, -O2 (just to
be safe), current asterisk source via cvs, and a pair of cisco 7940's
for testing. Everything looks 'fine' as far as I'm able to tell. Both
phones register with asterisk, and a 'sip show peers' results in:

*CLI> sip show peers
Name/username    Host               Mask             Port  Status
2001/2001        172.16.0.253  (D)  255.255.255.255  5060  Unmonitored
2000/2000        172.16.0.196  (D)  255.255.255.255  5060  Unmonitored


...output (when ran with -cvvv) is:

    -- Executing Dial("SIP/2000-79d2", "SIP/2001|20") in new stack
    -- Called 2001
    -- Got SIP response 488 "Not Acceptable Here" back from 172.16.0.253
  == No one is available to answer at this time
    -- Executing VoiceMail("SIP/2000-79d2", "u2001") in new stack
  == Parsing '/etc/asterisk/voicemail.conf': Found
    -- Playing 'vm/2001/unavail'
  == Spawn extension (from-sip, 2001, 2) exited non-zero on
'SIP/2000-79d2'

I've tried searching via google for days on this issue, and have found
many discussions of what the various status codes mean (4xx, etc), but
have not yet come across anyone mentioning precisely what causes this
error within the context of a "real world" SIP handset.

If anyone is able to offer some sort of detail to the list on this
subject, I'd be most appreciative.

Regards,

--Tk