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

[Robert Kulagowski]

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?