I have these problems on E1 link with my PSTN provider:
1) sometimes, when I make an outside call, I hear that the other side answers but the call drops immediately
2) sometimes when I make an outside call, I receive the busy signal. I notice that we are never used all the channels of E1 link.
These are our architecture:
- Cisco Call Manager v.4.1 sr.7
- Voice gateway Cisco 2851 IOS spservicesk9-mz.124-8
- E1 connection with PSTN provider via MGCP and VWIC-2MFT-E1 module
as attachments, there are today reports from "show controllers e1" and RTMT.
In these outputs I notice some errors.
Is it possible that the problems that I've listed are connected with these errors?
thanks in advance