"Not enough bandwidth" message on IP Phones

[rramlal]

Hi All,

We have a call manager 6.X cluster with remote sites. One of the remote locations is experiencing the low bandwidth error message. This message occurs sometimes throughout the peak times when no one is using the IP Phones. The WAN link is usually experiencing high latency of 300ms but the bandwidth is not being maxed out. The bandwidth is 10MB. The voice gateway is MGCP (2821) with T1 CAS PSTN.

All calls are made internally within the remote site and externally over the PSTN. No calls are made to other remote sites.

Remote site IP Phones

DP_M01, which has a location with audio bandwidth of 2MB and region of calls to other regions to use G729 and same region to use G711.

Remote site gateway

Assigned to DP_DC1, has a location with unlimited bandwidth and a region similar to above.

Can someone advise if there is any troubleshooting steps for this issue as I am out of options to try.

[Dennis Mink]

the location in which the phones are in defines the bandwidth, that "not enough bandwidth" message is typically displayed when the location in which the phone is in, runs out.

You can use RTMT to verify how much bandwidth a certain location has: Performance>Cisco Locations then check the location you are interested in.  monitor. have a phone in it make a call and see if it substracts. you should not make it more than 2Mbps is Qos is set up for that bandwidth otherwise you are oversubscribing.

I believe 6.x still has the option to re-sync bandwidth, try that