Re: One-Way Audio

Ralf Schlatterbeck wrote:
> Both, call *from* a sip-phone into asterisk out via ISDN as well as an
> incoming call from isdn to sip phone experience one-way audio: The ISDN
> side can hear everything from the SIP phone but not vice-versa.
hi ralf,

you may check bchannel.c (lcr) if it receives PH_DATA_IND (bchannel data
from mISDN). if so, check the function of chan_lcr where the data is
transmitted to and put some debug messages to it to check if it is
really transmitted to asterisk.

for calls from isdn to isdn, the bridge is performed directly through
kernel, which is done in hardware, if you use hfc-4s/8s/e.

regards,

andreas