hi all expert,
i got a problems with voice port
i have three cisco 2811 routers, they are worked on operation , and connected triangle each other. Router A is main router to connect other two. this is voice port condition in no ph call state.
Router A # sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/2/0 -- fxs-ls up dorm on-hook idle y
0/2/1 -- fxs-ls up dorm on-hook idle y
0/2/2 -- fxs-ls up dorm on-hook idle y
0/2/3 -- fxs-ls up dorm on-hook idle y
0/3/0 -- fxo-ls up dorm idle on-hook y
0/3/1 -- fxo-ls up dorm idle on-hook y
0/3/2 -- fxo-ls up dorm idle on-hook y
0/3/3 -- fxo-ls up dorm idle on-hook y
this is Router B state
Router B#sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up dorm on-hook idle y
0/1/2 -- fxs-ls up dorm on-hook idle y
0/1/3 -- fxs-ls up dorm on-hook idle y
this is Router C state
Router C#sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up dorm on-hook idle y
0/1/2 -- fxs-ls up dorm on-hook idle y
0/1/3 -- fxs-ls up dorm on-hook idle y
Router A to Router B & C , connection bandwidth is 512 kbps , Router C to B is 128 kbps but it's only for backup , rarely to use.
Now my problem is when i dial to Router B or Router C voice call, dial up tone is going to normal ph line, hear ring tone, then come in router, keep silent, it doesn't work, but at that time, i checked my routers voice port state, they are off hook and just stay at idle,
For eg, i called from Router A to Router B, port status are here (i'm controlled Router B & Router C remotely ).
Router A#sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/2/0 -- fxs-ls up dorm on-hook idle y
0/2/1 -- fxs-ls up dorm on-hook idle y
0/2/2 -- fxs-ls up dorm on-hook idle y
0/2/3 -- fxs-ls up dorm on-hook idle y
0/3/0 -- fxo-ls up up idle off-hook y
0/3/1 -- fxo-ls up dorm idle on-hook y
0/3/2 -- fxo-ls up dorm idle on-hook y
0/3/3 -- fxo-ls up dorm idle on-hook y
In router B,
Router B#sh voice por sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up up off-hook idle y
0/1/2 -- fxs-ls up dorm on-hook idle y
0/1/3 -- fxs-ls up dorm on-hook idle y
This is call from Router A to Router C
Router A#sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/2/0 -- fxs-ls up dorm on-hook idle y
0/2/1 -- fxs-ls up dorm on-hook idle y
0/2/2 -- fxs-ls up dorm on-hook idle y
0/2/3 -- fxs-ls up dorm on-hook idle y
0/3/0 -- fxo-ls up dorm idle on-hook y
0/3/1 -- fxo-ls up dorm idle on-hook y
0/3/2 -- fxo-ls up up idle off-hook y
0/3/3 -- fxo-ls up dorm idle on-hook y
Router C#sh voice port sum
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
============== == ============ ===== ==== ======== ======== ==
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up dorm on-hook idle y
0/1/2 -- fxs-ls up up off-hook idle y
0/1/3 -- fxs-ls up dorm on-hook idle y
Before these days, our connection is working normally. Now other remote site , we can see voice port is off hook state, but can't hear ring tone from my side, From remote side, they also try to call us, but it can't. i have no idea to resolve this problem. i try to shutdown , no shutdown on each router's voice port , but it's still not working. 1st time shut & no shut procedure , Router A to Router B is work again, after 30 mins, it's silent again.
Help me and advice me how to do, which is the reason of failure?
thanks all
