Is battery polarity reversal supported on cisco 1750-4V FXS ports ?

roshanjay · ‎07-02-2001

If so, from which IOS version ?

We have connected a 1750-4V with VIC-2FXS cards ro a PBX and it needs the batter reversal to detect the connect/disconect of calls to generate billing records.

Thanks

dgoodwin · ‎07-02-2001

I think you will need to use IOS version 12.2(2)T but I don't know whether performing the battery reversal for disconnect supervision works or not. It looks like it is definitely there for answer supervision. Check out this URL... also to test this using that software should be pretty quick.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t2/ft_ansds.htm