[cisco-voip] That's weird: analog paging has no voice path in 12.4(24)T1, but works in 12.4(15)

Nick Matthews matthnick at gmail.com
Tue Sep 15 11:23:21 EDT 2009


Correct, you can try 'no battery-reversal'.

I saw some difference in the timing, and it's possible that turning
off battery reversal will change the timing for the better.

-nick

On Tue, Sep 15, 2009 at 10:55 AM, Robert Kulagowski <rkulagow at gmail.com> wrote:
> Robert Kulagowski wrote:
>>
>> Justin Steinberg wrote:
>>>
>>> are you using a FXS interface?  almost sounds like maybe a battery
>>> reversal mismatch could be disconnecting the call just after you hear the
>>> paging tone.    if it is FXS, you could try toggling the 'battery-reversal'
>>> commands.    I doubt there would be a default IOS behavior change related to
>>> battery-reversal between 12.4(15)T and 12.4(24)T but it's worth a try.  I
>>> think you have to 'shut'/'no shut' the port after you make the config
>>> change.
>>
>> Tried that on the voice port, did a shut/no shut, no difference.  Tone
>> comes on indicating that the paging unit has picked up, but no voice path is
>> established.
>>
>
> Weirder.  The command isn't actually "sticking".
>
> USTXDAVGW01#sh run | sec voice-port 2/0/2
> voice-port 2/0/2
> USTXDAVGW01#conf t
> Enter configuration commands, one per line.  End with CNTL/Z.
> USTXDAVGW01(config)#voice-port 2/0/2
> USTXDAVGW01(config-voiceport)#battery-reversal
> USTXDAVGW01(config-voiceport)#shut
> USTXDAVGW01(config-voiceport)#no shut
> USTXDAVGW01(config-voiceport)#^Z
> USTXDAVGW01#sh run | sec voice-port 2/0/2
> voice-port 2/0/2
>
> Doesn't that usually mean that whatever I already entered is the default?
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