I have a Cisco AS5350XM router (1) with 2 t1 voice chnl coming to it , chnl 3/1 works fine user can get call and voice, but on 3/0 the calls lands but there is no voice , on my second voice gateway router (2) I have 3 t1, 3/0 , 3/1 and 2/0 all get calls and voice, any one have and idea, the mistery thing is that the same config for 3/1 on rtr(1) is on 3/0 rtr (1), whe now that port maping is good cause we land a call on the station , we know that the codec is the same as 3/1 wich again working fine , I am out of clues.

#show dial-peer voice summ

TAG TYPE MIN OPER PREFIX DEST-PATTERN FER THRU SESS-TARGET STAT PORT

3249 voip up up 0 syst ipv4:10.0.0.1

13249 pots up up 3249 0 up

3/0:0