Hi guys any ideas what may be causing the following issues..
The call rings my phone, but after 2 rings it cuts off.
call path:a dialer originate the all:
dailer--->cisco2811--->FW--->internet-->voip gateway in UK--->telco in UK--->underlying carrier--->telco in US--->my phone (either desk or cell phone)
it appears that the UK gateway is sending user info/protocol that the US telco may not reconignized. I am using codec:g711ualaw, we also tried g729..
PS:local calls to UK work fine, it is just the US calls that do not work...
His, this seems to be CSCsi94745, there are workarounds, however best solution is to upgrade to e.g. 12.4(11)XJ4, that also will give you the iLBC coded that is great for low bit rate over the internet.
Hope this helps, please rate post if it does!