[Asterisk-Users] Best drivers for HFC-S ISDN cards

[Tim Robinson]

Chris
I have only ever used zaphfc drivers and for me they are perfect.  Echo 
has never been a problem.  It would be helpful if you were to provide a 
bit more information to the group about your configuration so we can try 
and help you work out the cause.

Switching to capi or mISDN is unlikely to help and will almost certainly 
be a retrograde step as far as I hear from these forums.

Best regards
Tim Robinson
Basingstoke, UK

Chris Bagnall wrote:
> It seems that HFC-S cards can be connected with asterisk in a few different
> ways - isdn4linux, mISDN, chan_capi or zaphfc. I've tried isdn4linux (severe
> echo, reproducable on every inbound call) and zaphfc (intermittent echo,
> disappears within about 30 secs of the call starting).
> 
> What's the recommended way to hook up these ISDN cards? Is switching to capi
> or mISDN likely to remove the echo problem completely, or is this one of
> those things one has to accept?
> 
> Thanks in advance.
> 
> Regards,
> 
> Chris