[asterisk-users] PRI Connected to definity errors

[C F]

We have setup asterisk to handle our calls before between telco and an
Avaya definity. The PRI keeps locking up every so often.
In addition I keep getting this error when trying to call the avaya:
    -- Channel 0/2, span 1 got hangup request, cause 102
    -- Hungup 'Zap/2-1'
When that error happens I get a fast busy (congestion) tone.

Any one can point me in the right direction?

TIA