tag:blogger.com,1999:blog-2158853543793456735.post9115313318003520414..comments2023-10-02T04:50:01.667-07:00Comments on VoIPNorm's Collaboration Blog: Using Lync with Multiple Direct SIP Trunks to the Same Cisco UCM Subscriber/ClusterChris Normanhttp://www.blogger.com/profile/07200178774058910421noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-2158853543793456735.post-57515454110183475922013-03-04T22:26:11.217-08:002013-03-04T22:26:11.217-08:00I didn't use this configuration before, but af...I didn't use this configuration before, but after reading its features I want to try it. Hope it didn't create any problem when I am going to try it. <a href="http://www.itel.ca" rel="nofollow"> virtual pbx toronto </a>itelnetworkshttps://www.blogger.com/profile/03773425427024294790noreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-76601389128942541632012-12-05T22:48:56.585-08:002012-12-05T22:48:56.585-08:00This comment has been removed by a blog administrator.Daizy Joshihttps://www.blogger.com/profile/15226769103203755714noreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-63829517018608216302012-06-26T23:53:09.650-07:002012-06-26T23:53:09.650-07:00Hi,
Why does lync need MTP's for Media Bypass...Hi,<br /><br />Why does lync need MTP's for Media Bypass? Why can they not use G711 directly between Cisco phone and Lync Client?<br /><br />ThanksRandom eventshttps://www.blogger.com/profile/05316705364790159025noreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-14046664437889445002012-06-01T07:08:42.711-07:002012-06-01T07:08:42.711-07:00Read our blog for more information on SIP trunks:
...Read our blog for more information on SIP trunks:<br /><br />http://sipforcallcenters.wordpress.com/Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-86765202657044752982012-04-24T02:46:57.728-07:002012-04-24T02:46:57.728-07:00SIP trunk could be used to work with Voice over IP...<a href="http://business.simplecall.com/business-broadband" rel="nofollow">SIP trunk</a> could be used to work with Voice over IP solution in business establishments. This is a solution that utilizes existing wired PBX models for communications for linking traditional telephone networks to external environment through the net.Daizy Joshihttps://www.blogger.com/profile/15226769103203755714noreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-743231060280693462012-02-08T08:22:11.382-08:002012-02-08T08:22:11.382-08:00This article helped me understand a weird SIP 404 ...This article helped me understand a weird SIP 404 issue I was having with CUCM / Exchange 2010 / 2007 diversion. You pointed me right to the Enterprise Parameter I was missing. So helpful. Thank you!<br /><br />http://www.darylhunter.me/blog/2012/02/cisco-cucm-exchange-2010-migration-from-2007.htmlDW Hunterhttp://www.darylhunter.menoreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-46823910528708535352011-09-01T20:38:33.460-07:002011-09-01T20:38:33.460-07:00What would be really nice to see on the Lync M/S s...What would be really nice to see on the Lync M/S side: virtual IP bindings. IIS has done this for..well forever. Ability to bind 'virtual' IP's to each SIP trunk would also be a very simple way to scale this design, and essentially is a model that has existed in HTTP for 20+ years. :) <br /><br />Then each SIP trunk is easily uniquely identifiable with no "smoke and mirrors" required in DNS, CUCM, etc. <br /><br />Of course that would just make this type of integration just TOO easy. <br /><br />Regards and thank you for the response.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-81744848898000580952011-09-01T17:12:50.852-07:002011-09-01T17:12:50.852-07:00Hi,
You are correct you will have to have each tr...Hi,<br /><br />You are correct you will have to have each trunk on a different port. <br /><br />There is only one way around this. You have seperate Mediation server pools with a trunk on each of those pools to avoid having the same ip address for the mediation server.<br /><br />I have done some limited testing using DNS names that works just fine and I also know of a company that is using this method for their remote sites.Chris Normannoreply@blogger.comtag:blogger.com,1999:blog-2158853543793456735.post-11077623614568998352011-09-01T12:54:47.292-07:002011-09-01T12:54:47.292-07:00timely post Chris. I am literally working on this ...timely post Chris. I am literally working on this on design for a POC effort. However one slight difference and I am curious if you didn't see this as a problem. The SIP invites from the Mediation Server will be from the same source IP; and unless you specifically create new SIP profiles & unique TCP ports on CUCM, each invite will hit CUCM on TCP/5060 ...If each SIP trunk on CUCM is intended to have a unique CSS, CUCM won't actually hit the 'right' CSS as it can't distinguish the incoming SIP invites as two different resources. In the end, it was necessary for me to have unique SIP security profiles and assign the CUCM SIP trunks to their unique sip profile (each with a different TCP port). Then on the Lync side, each PSTN gateway that points to the same CUCM FQDN, also points to their unique TCP port. Now on the incoming SIP Invite with the same source IP, CUCM see's each Invite to their specific SIP trunk and will always use the correct CSS. I would really like to see if you tested this as it was the only way we could establish multiple SIP trunks between the same Lync M/S and CUCM cluster.Anonymousnoreply@blogger.com