I was wondering if someone could help me with an interesting issue I have been experiencing with VoIP. I have a VoIP link in place that sporadically experiences loss of voice within a conversation of around 3 - 5 seconds.
Site A is the hub site which acts as a local breakout point and connects together three other sites, B, C and D, each having its own 2mb leased line. At each site there is a PBX integrated using an E1 connection (NM-HDV) into a Cisco 3640. Site A also has a 3640. When calling from site B and C to D (via A), the call path inbound to that site experiences loss of voice randomly and intermittently. But the return path is fine.
Yes we are using RTP header compression, QoS and no VAD on the circuits. I have disabled RTP header compression on the affected link to see if this resolves the issue. Are there issues with RTP header compression caused by different IOS releases?
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...