[cisco-voip] loop start FXO disconnecting from Unity

[Pat Hayes]

Is this an mgcp gateway? Take a look at:

http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_tech_note09186a0080922e2e.shtml#topic1

...it says after 50 seconds, but in my experience it has been a lot
closer to 20.

On Thu, Feb 19, 2009 at 11:50 AM, Robert <rsingleton at morsco.com> wrote:
> I will be opening a TAC SR on this issue later today when I can be
> available to answer the phone, but I thought I might first bounce the
> issue off this brain trust....
>
> I have a location with three loop start POTS lines connected to a 2811
> ( IOS 12.4(13r)T ) with a VIC2-4FXO card. The lines handle incoming and
> outgoing calls without incident except that an incoming call transferred
> to Unity will disconnect after a fairly short time. It's difficult to
> accurately time the disconnections, but according to CDRs, they are
> anywhere from 12 to 19 seconds, but perhaps more importantly, CDR shows
> all with a disconnect cause code of 41 (Temporary Failure).
>
> Only FXO incoming calls from this particular gateway transferred to
> Unity exhibit this symptom. Incoming calls transferred anywhere else
> except Unity work fine. I have 23 other similarly equipped locations
> that do not do this. This is a new location put online only last week,
> so I really suspect it's a basic configuration issue with the gateway,
> except that so far as I can detect, there are no voice port
> configuration differences between this one and the others. Obviously,
> that can't be true, but that's what I see so far.
>
> Any ideas for something specific to check?
>
> Thanks,
>
> Robert
>
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