Dropped Calls on Nortel CS1000M

[DancingDave]

Hi, we recently implemented 500+ phones onto a CS1000M succession 4 with CCMS and CCMA. Some of the users were migrated from another (remote) CS1000M, which previously connected over a WAN using a CS1000B.

Since we went live (over two weekends), we are getting a lot of dropped calls. The call is being put through (non forced agent), but the agent only hears 'the other caller has hung up'

There seems to be no pattern to it. It's across several lines, agents and floors.

Has anyone any ideas where to look? We're in the process of trying to recreate on a specific phone so we can monitor what's happening on the Meridian and the data network and then we'll be taking components out of service to see if it's a faulty media card, trunk etc. (no obvious error messages on any of the components thus far)

Any pointers would be much appreciated.

DD

 

[DancingDave]

Should have said. All users are on phase 2 i2004s

 

[KillianK]

check you zone bandwidth config..

 

[djwht]

patches, patches, patches...on the PBX, on the VGMC, on the SigServ, on the CCMS. Make sure you have ALL patches for each product up to date.

Next, Bandwidth, QoS, Zone config, routers config - follow the NTP, anywhere the word recommneded is stated in the NTP, it really means require.