Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Silver

Voip problem

When we make calls through a high-density voice (NM-HDV-1E1-30E) module to PSTN, call setup is established, but voice does not pass through.

Our gateway is a Cisco3620 (IOS: 12.2.10) and it's connected to a PBX through the NM. The PBX can reach external phone numbers through digital and analog lines, the problem appears when we use the analog lines.

Is this a DSP problem? Any idea?

Regards.

2 REPLIES
Cisco Employee

Re: Voip problem

Not enough info here. What type of signaling, wat is the topology, how does the pbx fit into the picture? What does the config look like?

Silver

Re: Voip problem

We are using E1 PRI.

Analog Phone --------- Cisco3620 -------------- PBX ---- PSTN

The config:

controller E1 0/0

pri-group timeslots 1-31

!

!

!

interface Serial0/0:15

no ip address

no logging event link-status

isdn switch-type primary-net5

isdn incoming-voice voice

isdn T309-enable

no cdp enable

!

voice-port 0/0:15

cptone ES

!

dial-peer cor custom

!

dial-peer voice 1000 pots (interface to the PBX)

destination-pattern .T

progress_ind progress enable 8

direct-inward-dial

port 0/0:15

!

Regards

229
Views
0
Helpful
2
Replies
CreatePlease to create content