[Asterisk-Users] Backup Proxy & Automatic Failover

[Adthrawn]

Hi,

Would it be possible to use an ISDN router instead of an ISDN card?

In addition to the failover issue, I'm also considering running a copy 
off a Mac OS X machine, and as such I do not have access to ISDN4Linux 
or CAPI toolsets. The only work-round I can imagine is to use a SIP 
aware ISDN router (probably a Cisco).

Any thoughts?

I know Vocal is built in this way (Vocal is owned and funded by 
Cisco)...

Regards,
Ad.