asterisk users - Jul 2004 - Strange behaviour using 7960

Hello all,

One of my remote employees is using a 7960 we sent him, on a public IP
address at his home office.

I've run pings and traceroutes both from the server to his phone, and
from the cable modem to our server, there's never a high ping time, or a
dropped packet, however about every 30 minutes to an hour into his calls
(not all of them, it's random) he can no longer hear the opposite party,
but they can hear him..

The messages in the asterisk console always look like this:

Jul 20 12:41:34 WARNING[14350]: Maximum retries exceeded on call
657654de7645b7b1700f2ed5381c8529@2$
Jul 20 12:41:34 NOTICE[14350]: Peer 'dnicol' is now UNREACHABLE!
Jul 20 12:41:54 NOTICE[14350]: Registration from
'sip:dnicol@pbx.company.com' failed for '69.142$
Jul 20 12:41:58 NOTICE[14350]: Peer 'dnicol' is now REACHABLE!

Now, I understand the unreachable means he's gone over his qualify time,
but why the registration failed *every* time after this happens?  The
audio always comes back after about 20 seconds, however occasionally the
* server will show RTP Inactivity timeout, and drop the call.

Anyone ever seen anything like this before?  I understand the Qualify
pings are application layer, and are not indicative of bad routing or
ping times, however, with ping times of 100ms across the board and no
dropped packets, I would be very surprised to see the Qualify pings go
over 2000ms (the default), unless something's really got the phone
cranking, no?

Brian D'Arcy

On Tue, 20 Jul 2004, Brian D'Arcy wrote:
> Anyone ever seen anything like this before?
Yes, with a Grandstream over an ADSL (routed) line. I disabled the check,
but the problem stil occured. And since this friends line was almost the
lowest ping in the complete ISP network something else must be responsible
for Asterisk thinking:  :o bad line :o

At my own place I have 7960 and ADSL (PPTP) line but I connect to
Asterisk via a IPIP Tunnel. In the beginning I had the opposite problem, I
could hear the other party but they could not hear me.
But I don't remember having this problem myself in the last months
anymore.

Stefan