[cisco-voip] Callmanager implementation over Internet

[Manoj Kalpage]

Hi Robert,
Thank you for your reply. I have already configured PIX to PIX implementation betwwen PIX515 and 501 but reduce the cost and impreve the bandwidth at client site, I am thinking about use PIX515 at Data Centre side and assign global IP address on the phone at client site. But this way I need some sort of NATting on our datacentre PIX515. it would be great help if you could send me some reference config for the NATting implementaion for CallManager environment.

Best regards,
Manoj
  ----- Original Message ----- 
  From: Robert Hugo 
  To: Manoj Kalpage 
  Cc: Matt Slaga (US) ; cisco-voip at puck.nether.net 
  Sent: Saturday, August 19, 2006 1:47 AM
  Subject: Re: [cisco-voip] Callmanager implementation over Internet


  I have done this with a simple PIX site-to-site tunnel and, yes, the CCM / Unity DOES support NATing.  If your scenario is more than a handful of remote users, like this site was, I would go with the Proxy setup as Matt described.  However, if you have a simple setup and want to go the site-to-site tunnel route, email me offline and I can send you some reference configs of the PIXs' and VOIP GWs. 


  On 8/18/06, Manoj Kalpage <manoj.kalpage at gmail.com> wrote: 
    Hi Matt,
    Thank you for your reply. If I do this with PIX, I guess I have to do natting. I am just wondering whether CCM and Unity does support for natting? Also, what is your recommendation for SCCP Proxy? 

    Best Regards,
    Manoj

      ----- Original Message ----- 
      From: Matt Slaga (US) 
      To: Manoj Kalpage ; cisco-voip at puck.nether.net 
      Sent: Friday, August 18, 2006 9:15 PM
      Subject: RE: [cisco-voip] Callmanager implementation over Internet

       
      You can use the SCCP proxy by Metreos to accomplish this and still remain secure.  



      I have implemented a callmanager/unity directly on the internet in the past for a company in your same situation.  Their server had more worms in viruses in 1 week than I've seen in my whole life (even with CSA & AV, they were able to take control of the server through a buffer overflow we think and disabled these services).  Perhaps CCM5 would be better suited for this purpose, or you could use your pix to only allow the necessary ports. 








--------------------------------------------------------------------------

      From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Manoj Kalpage
      Sent: Friday, August 18, 2006 4:23 AM
      To: cisco-voip at puck.nether.net
      Subject: [cisco-voip] Callmanager implementation over Internet



      Hi All,
      We have Call Manager and Unity hosted in Data Centre. All our clients have VPN connection to Data Centre. I am using PIX 515 at Data Centre and PIX501 at clients side. All are working perfect except voice quality issue some times. Since this is PBXL hosting service and security is not that much concern, I am wondering I can setup phones to acess CCM and Unity over the internet using gloabl IP address on Cisco IP Phones. Has anyone every implemented CallManager and Unity over internet? Your comment and advice would be greatly appreciated. 

      Best regards,
      Manoj



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  -- 
  Robert Hugo
  Senior Voice Network Engineer
  World Wide Technologies
  60 Weldon Parkway
  St. Louis, MO, 63043
  1-314-409-6527
  Cell:1-217-520-3261 
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