Updated to Asterisk 1.4.0, zaptel 1.4.0 and libpri1.4.0 and started getting a hundreds of errors like below:
[Mar 28 08:36:33] ERROR chan_zap.c: !! Got reject for frame 52, retransmitting frame 55 now, updating n_r!
Systems seems to running ok and answering calls coming in on PSTN.
Is this really a problem and if so, what is it, and how do I stop it?