Hi all,
we do have problems with incoming modem connections and outgoing facsimiles…
we do have the following setup (asterisk 1.2.16)
FAX <-> Digium TDM400P (FXS) <-> Asterisk <-> Beronet BN4S0 (mISDN) <-> POTS
MODEM <-> Digium TDM400P (FXS) <-> Asterisk <-> Beronet BN4S0 (mISDN) <-> POTS
Echocancel is deactivated for the the ZAP lines, also echocancelwhenbridged is off for mISDN.
It does not seem to be an interupt problem - vmstat shows me about 1000 interupts per second
When an outgoing fax call is established - then the channels do show me the following codecs:
ZAP Channel:
Native Format: 68 (???)
Write/Read Format: 64 (slin)
mISDN Channel:
Native Format: 8 (alaw)
Write/Read Format: 64 (slin)
so i think it is a problem because asterisk does some fance codec translation on the call. What is the Native Format 68 ?
Normally all formats should be Format 8 (alaw) - this is what also comes from the telco (so the mISDN POTS connection is using format 8 - as it should).
How can i get asterisk to just use format 8 ?
Or is there an other possible problem with this setup ?
What i do also see in the /var/log/messages file is this message “l2 D-channel addr:40000402 frame wrong EA0/EA1” - does anyone know what this does mean ?
regards,
Wolfgang