Callers intermittently get reorder tone on calls that traverse or originate from a VoIP network and "Disconnect cause code of 2F" is received.

[TCC_2]

Core Issue

Calls are failing to complete with a disconnect cause code of 2F - resources unavailable. Channels are available for use.

The user has configured max-conn parameter in the incoming VoIP dial peer that is being matched for the call. For example:

dial-peer voice 111 voip
 max-conn 5
 incoming called-number .
 destination-pattern 111....
 session target ipv4:10.1.1.1
 dtmf-relay h245-alphanumeric
 ip qos dscp cs5 media
 no vad

Resolution

Remove or increase the max-conn value.