asterisk users - Feb 2008 - Asterisk and Cisco Unity?

Has anyone here any experience in getting an Asterisk box to talk to
a Cisco Unity system? I have a potential customer who would like to
add a conference bridge to their existing Cisco Unity setup.

The digging I have done so far suggests that it should be possible to
talk SIP between them, but I'd be interested in any stories of success
or failure.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

Do you mean Call Manager?  Unity is just their voicemail system.  Yes, 
you can use SIP to talk between * and CM.  You can also use h.323, but 
it is a big hassle.

Tony Mountifield wrote:
> Has anyone here any experience in getting an Asterisk box to talk to
> a Cisco Unity system? I have a potential customer who would like to
> add a conference bridge to their existing Cisco Unity setup.
> 
> The digging I have done so far suggests that it should be possible to
> talk SIP between them, but I'd be interested in any stories of success
> or failure.
> 
> Cheers
> Tony

Tony wrote:
> Has anyone here any experience in getting an Asterisk
> box to talk to a Cisco Unity system? I have a
> potential customer who would like to add a conference
> bridge to their existing Cisco Unity setup.
> The digging I have done so far suggests that it should
> be possible to talk SIP between them, but I'd be
> interested in any stories of success or failure.
As Peder mentioned, Unity is only a VM platform.  I actually
started using Asterisk to replace a Cisco Conferencing
package that never worked right.  We have had it running
internally for three+ years now, and have been very happy
with the results.

I am currently using chan_ooh323, but SIP is possible if
you have CCM 4.2 or higher.  You'll also want to run
a later release of Asterisk 1.4 which has a work-around
for an odd CCM hold implementation.

Dan