[asterisk-users] problems with some incoming/outgoing calls

[Tzafrir Cohen]

On Thu, Oct 23, 2008 at 11:30:29PM +1100, Fernando Serto wrote:
> Hi,
> 
> I've been very puzzled lately. I installed a phone system for a friend
> a few weeks ago, and they're having a problem that I can't get rid of,
> actually 2 problems. Before I go into the problems, let me tell you
> about the setup. It's a pretty small setup with only 4 handsets, all
> Polycom 320s, the server is a Dell SC440 with Intel E2180 CPU (dual
> core, 2GHz) and 512MB Ram. Internet Connection is an ADSL2, with a not
> so reliable ISP in australia. For incoming calls, I had a Digium
> TDM410P with 4xFXO modules and HWEC. Because of these problems, i
> replaced the Digium card with a Sangoma A200D, but it didn't make any
> difference to the problems. All phones are hooked up to a Netgear PoE
> switch.
> 
> Almost forgot to mention that this is not my first Asterisk setup, and
> in fact it is my 4th, and I used various SIP handsets before, and also
> different cards (Analog and Digital), so I'm not a total noob.
> 
> Let's get to the problems...
> 
> 1) Some incoming calls cannot be picked up
> Sometimes, incoming calls, coming through the analog card, cannot be
> picked up. All handsets are set to ring at the same time on incoming
> calls. and most of the time, calls can be answered on any of the
> handsets, but maybe 3 or 4 times a day, all handsets will be ringing,
> and you go to one handset to answer the call, you pick the handset,
> and it doesn't answer the call, it keeps ringing, then you go to
> another handset, and still can't pick up, sometimes, you can even try
> all 4 handsets, and no luck. but, at other times, you can't answer on
> the first handset, but you can on another, and it is totally random.
> but people are pretty pissed off for running around to answer a call.
> and what puzzles me is that you can sit around watching logs for
> hours, and it won't happen, other times, it happens 3 times in a row.
> any ideas?

Could you please enable 'sip set debug' in the Asterisk CLI and provide 
a trace?

> 
> 2) Delay on outgoing calls via SIP
> People have been saying that when they call people, there's a delay
> for the call to be answered. For example, caller dials a number,
> callee answers the ringing phone, but caller is still listening to a
> ringing tone, and after a few seconds (up to 15 seconds) it sounds
> like the callee has just answered the call, when in fact, he had
> already answered a few seconds before. Problem with this is that some
> callees will hangup before the caller starts talking. These calls are
> going via pennytel, in australia, which seems to be a pretty good VOIP
> provider around here, and I've been using it on other setups and never
> had these issues.

Maybe this is a dialplan issue? Any chance you use freepbx? To see if
there's a dialplan issue, use: 'core set verbose 3' in the Asterisk CLI.

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir