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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>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. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Scott<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Kris Seraphine<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, August 25, 2006 2:27
PM<br>
<b><span style='font-weight:bold'>To:</span></b> cisco-voip<br>
<b><span style='font-weight:bold'>Subject:</span></b> [cisco-voip] FXO calls
disconnect when answered</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi<br>
<br>
I've been struggling with this issue for over a month and both I and TAC seem
to be stumped. <br>
<br>
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. <br>
<br>
PSTN caller calls into the system. <br>
The IP phone user hears the phone ring and answers the call.<br>
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. <br>
<br>
The problem seems to be that the router is interpreting a disconnect coming
from the telco.<br>
<br>
Trace snippet:-<br>
008192: .Jul 31 08:36:28.484: htsp_process_event: [2/0,<br>
FXOLS_PROCEEDING, <br>
E_HTSP_CONNECT]fxols_offhook_connect <br>
008193: .Jul 31 08:36:28.488: [2/0] set signal state = 0xC timestamp = 0<br>
008194: .Jul 31 08:36:28.488: htsp_timer_stop<br>
008195: .Jul 31 08:36:28.488: htsp_process_event: [2/0, FXOLS_CONNECT,<br>
<br>
E_HTSP_VOICE_CUT_THROUGH]fxols_connect_proc_voice <br>
008196: .Jul 31 08:36:28.716: htsp_process_event: [2/0, FXOLS_CONNECT,<br>
<br>
E_DSP_SIG_0100]fxols_normal_battery<br>
008197: .Jul 31 08:36:28.744: htsp_process_event: [2/0, FXOLS_CONNECT,<br>
<br>
E_DSP_SIG_1100]fxols_offhook_disc <br>
<br>
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. <br>
<br>
I've tried every combination of battery-reversal supervisory disconnect etc...
that I can think of but I cannot seem to solve this problem. <br>
<br>
TAC does not think its hardware related but I'm going to send a replacement
router out just in case. <br>
<br>
I'm hoping someone might have some suggestions for me. <br>
<br>
Thanks in advanced. <br>
<br>
Kris Seraphine <br>
CCIE No. 15163, MCSE<br>
<a href="mailto:Kris.Seraphine@cliftoncpa.com">Kris.Seraphine@cliftoncpa.com</a><br>
<br>
<br>
<br clear=all>
<br>
-- <br>
kris seraphine <o:p></o:p></span></font></p>
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