Question: ISDN30 TE210P framing

The Asterisk server is connected to PBX with no-crc4 framing

In the /etc/zaptel.conf I have the config line


The ccs refers to framing method.


For matching with the PBX:
Is it possible instead of ccs to fill in no-crc4 ?
Or do I have it do it like this --> span=1,0,0,ccs,hdb3,no-crc4 ?


To enable crc4 you specify it on the line(span=1,0,0,ccs,hdb3,crc4). If it’s not specified(span=1,0,0,ccs,hdb3) then it is not enabled.

Clear !

The problem must be caused by something else !

Thanks for your reply !