[Asterisk-Users] Asterisk SIP phones to Cisco Unity via CCM 4.0 SIP Trunk

[sys read]

Hi guys,

I want to leave messages on our unity box.   I have already converted a
couple 7940s to SIP, but I can't give them out to our users because I don't
want to have to deal with two voicemail systems.

we have licenses for all our users on unity as is.    we're about to buy a
bunch more 7940s, but I don't want to cause they're expensive.     I'd
rather buy a cheaper SIP phone and have it rollover to the unity vm.

On 1/23/06, Gary Richardson <gary.richardson at gmail.com> wrote:
>
> You can run a SIP image on a 7940. Asterisk at home has pretty good
> support for it. Check the voip-info.org wiki for instructions on
> switching the firmware.
>
> Hopefully that will take a step out of the plan -- you could
> completely ditch your Cisco system :)
>
> On 1/23/06, sys read <sysread at gmail.com> wrote:
> >
> > Hi,
> >
> > I've got a CCM ( Cisco Call Manager ), with a Cisco Unity VM server and
> > about 45 SCCP phones on the ccm, and 200 users on unity.   we want to
> > migrate all users to IP Phones to ditch our ancient phone system.   I
> would
> > love to get Linksys-Sipura SPA-941s for the 150 users not on IP phones
> yet
> > and run sip to an asterisk server, but have their voicemail on Unity.
> >
> > these phones are $150 each, the alternative is cisco 7940s ( around $250
> )
> > running SCCP through the CCM.  at the quantities I'm talking about, $100
> is
> > significant.
> >
> > Does anyone have any idea how to get this done?
> >
> > I've tried this:
> >
> > exten => 123,1,Dial(SIP/sipphone,20)
> > exten => 123,2,Dial(SIP/ccm/3040)
> >
> > where 3040 is our VM pilot for ccm.  but all it does is take us to the
> main
> > greeting.
> >
> > we have smartnet, but they haven't been helpful at all
> >
> > I called digium to see if they could help if we paid, but they said
> they've
> > never heard of cisco unity....
> >
> > help?
> >
> > thanks.
> >
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