[cisco-voip] PSTN rings once, router answers, then silence...

[Tom Storey]

Hi Mark,

It is natted through another router, but the issue isnt related to SIP.

The issue is with calls that come in via the PSTN/FXO.

Calls comming in via SIP have never faultered.

Thanks,
Tom

On 28/01/2009, at 3:46 PM, Mark Holloway wrote:

> Is the IP that SIP is using when registering to the provider a  
> public or
> private IP?  Or does the router NAT through another device before  
> reaching
> the public network?
>
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Tom Storey
> Sent: Tuesday, January 27, 2009 6:24 PM
> To: Scott Voll
> Cc: cisco-voip at puck-nether.net List
> Subject: Re: [cisco-voip] PSTN rings once, router answers, then  
> silence...
>
> Hi all,
>
> There is no MGCP in this configuration that I am aware of, but I do  
> have
> the router registering with a VoIP provider using SIP.
>
> Thanks.
> Tom
>
>> MGCP?
>>
>> have you checked on the CM and the VGW that everything is registered?
>>
>> Scott
>>
>> On Mon, Jan 26, 2009 at 11:34 PM, Tom Storey <tom at snnap.net> wrote:
>>
>>> Hi all.
>>>
>>> I have a 1760 with a VIC-2FXO and VIC-2FXS. I have connected the  
>>> phone
>>> to
>>> FXS port 3/0, and the PSTN to FXO 2/0, and Im running into a strange
>>> issue.
>>>
>>> Sometimes when a call comes in via the PSTN the caller will hear a
>>> single
>>> brief ring, being the PSTN ringing, they will then hear the 1760  
>>> pick up
>>> due
>>> to the ringing stopping, but then there will be silence and the  
>>> phone
>>> attached to the FXS port will not ring.
>>>
>>> Every other time when a call comes in there will be a single brief  
>>> ring
>>> and
>>> the 1760 will answer and produce its own ringing tone, and the phone
>>> attached to the FXS port will ring.
>>>
>>> There doesnt appear to be any particular sequence of events to  
>>> cause it
>>> to
>>> happen that I have been able to work out. Its just completely  
>>> random.
>>>
>>> Can anyone suggest any settings that I can adjust (Im trying "ring
>>> number
>>> 2" at the moment to see how that goes) that might cease this  
>>> behaviour,
>>> or
>>> suggest any debug commands that I can run to try and capture what is
>>> going
>>> on?
>>>
>>> Unfortunately its just a residential line, so there arent that many
>>> calls
>>> made in so it might take a while before it happens again. But  
>>> thats all
>>> part
>>> of the fun right? ;-)
>>>
>>> Cheers,
>>> Tom
>>> _______________________________________________
>>> cisco-voip mailing list
>>> cisco-voip at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>>
>>
>
>
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