[Asterisk-Users] Asterisk SIP phones to Cisco Unity via CCM4.0SIP Trunk

[Michael J. Tubby B.Sc (Hons) G8TIC]

Options would appear to be:

a) use cheaper SCCP phones like 7905/7912 and stay with CCM

b) put an asterisk box up and configure a SIP trunk between CCM and Asterisk - I have done this and it works although there used to be a bug with the CCM box not tearing down the RTP at the end of the call - it appeared to rely on receiving an ICMP "port not reachable" from the other end - this could probably be fixed with the appropriate rtptimeouts ?

You would add new users on Asterisk using SIP phones and have a mixed system.

c) ditch the CCM and go 100% Asterisk


You might consider (b) in the short/medium with a road-map towards (c)


Mike


  ----- Original Message ----- 
  From: sys read 
  To: Asterisk Users Mailing List - Non-Commercial Discussion 
  Sent: Tuesday, January 24, 2006 3:56 PM
  Subject: Re: [Asterisk-Users] Asterisk SIP phones to Cisco Unity via CCM4.0SIP Trunk



  I have my eyes on the Linksys/Sipura 941, ( SIP ), but the core problem is that you can't use SIP phones with CCM.  I have a SIP trunk between asterisk and ccm.  I can route calls back and forth, I just can't get the call to send to vm if no answer on the asterisk side. 



  On 1/24/06, kevin ling <kevin.ling at amphenol.com.tw> wrote:
    Hi,

    Maybe buy 7912 phone and register to CCM is another choice. or integrated CCM with asterisk voicemail system.



----------------------------------------------------------------------------
    From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of sys read
    Sent: Tuesday, January 24, 2006 11:28 PM
    To: Asterisk Users Mailing List - Non-Commercial Discussion
    Subject: Re: [Asterisk-Users] Asterisk SIP phones to Cisco Unity via CCM 4.0SIP Trunk



    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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