[cisco-voip] FXO calls disconnect when answered

[Kris Seraphine]

that's a good thought.

Unfortunately I don't think it applies to this case.  I'm coming right off
the block.  Unless the telco is doing something outside the building.

On 8/25/06, Scott Coner (US) <scott.coner at us.didata.com> wrote:
>
>  I had a similar problem with a customer and it turned out to be low
> voltage on the POTS line.  In my case the low voltage situation was being
> caused by an inline surge protector on the POTS line.
>
>
>
> Scott
>
>
>  ------------------------------
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Kris Seraphine
> *Sent:* Friday, August 25, 2006 2:27 PM
> *To:* cisco-voip
> *Subject:* [cisco-voip] FXO calls disconnect when answered
>
>
>
> Hi
>
> I've been struggling with this issue for over a month and both I and TAC
> seem to be stumped.
>
> I have a customer with a small office that we are trying to migrate to a
> centralized CCM cluster.  They have a 1760V with 4 analog lines that we want
> to connect to an FXO card. When we connect the lines to the router for
> testing I get the following behavior.
>
> PSTN caller calls into the system.
> The IP phone user hears the phone ring and answers the call.
> The IP phone user sees the call disconnect After a second or two, the call
> begins to ring again on the IP phone If the IP phone user answers the call
> again, the call disconnects and the process repeats The PSTN caller hears
> ringback the whole time.
>
> The problem seems to be that the router is interpreting a disconnect
> coming from the telco.
>
> Trace snippet:-
> 008192: .Jul 31 08:36:28.484: htsp_process_event: [2/0,
> FXOLS_PROCEEDING,
> E_HTSP_CONNECT]fxols_offhook_connect
> 008193: .Jul 31 08:36:28.488: [2/0] set signal state = 0xC timestamp = 0
> 008194: .Jul 31 08:36:28.488: htsp_timer_stop
> 008195: .Jul 31 08:36:28.488: htsp_process_event: [2/0, FXOLS_CONNECT,
>
> E_HTSP_VOICE_CUT_THROUGH]fxols_connect_proc_voice
> 008196: .Jul 31 08:36:28.716: htsp_process_event: [2/0, FXOLS_CONNECT,
>
> E_DSP_SIG_0100]fxols_normal_battery
> 008197: .Jul 31 08:36:28.744: htsp_process_event: [2/0, FXOLS_CONNECT,
>
> E_DSP_SIG_1100]fxols_offhook_disc
>
> I've talked to the CO guy but he's been little help.  I did have them run
> a ground start trunk for testing but it exibits the same behavior.
>
> I've tried every combination of battery-reversal supervisory disconnect
> etc... that I can think of but I cannot seem to solve this problem.
>
> TAC does not think its hardware related but I'm going to send a
> replacement router out just in case.
>
> I'm hoping someone might have some suggestions for me.
>
> Thanks in advanced.
>
> Kris Seraphine
> CCIE No. 15163, MCSE
> Kris.Seraphine at cliftoncpa.com
>
>
>
>
> --
> kris seraphine
>
> ------------------------------
>
>
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-- 
kris seraphine
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