IPhone SIP Client on Callmanger 5.1.3

another successful project that i completed this week was to make a iphone SIP client called SIAX register on callmanger 5.1.3 using VPN.

so i upgraded my unlock iphone to version 2.2.1(5H11) using pwnage tool ( just takes 15 minutes) thanks to Mr Sinha & IM for pointing me to this tool then i configured Cisco VPN on iphone over home wifi and installed this SIP client called SIX and sucessfully registered on my test callmanger 5.1.3.

The phone registers without much issues but i noticed that it gets unregistered after every 3-5 minutes and also the when dialing using SIP cant actually hear any audio...

any ideas ?? pls share

Nortel 1140 SIP phone working on CCM 5.1.3

After weeks of research +troubleshooting and very valuable help from my great friend Deepak Bhatnagar (Amsterderm wale :) ) i was able to make a nortel 1140 SIP phone work out of Cisco Callmanger 5.1.3.

here are some key things to know if you plan to do this setup

Nortel Phone run a properity SIP protocol called UNISTIM and so by default when you hook them with any SIP server including callmanger they wont register.

you need to first upgrade them to standard SIP firmware and then register on callmanager

another key thing to know specially when registering any third party SIp phones on CCM is userid should be kept same as DN eg user=1000,DN=1000. Rest all other settings on callmanger SIP phone security profile and SIP profile remains standard except few tweakings.


I hope this blog will help those who are trying to achieve this integration and if you have any questions just reply me and i can share more minute details...

Im glad that this is working as this is still not supported by Nortel & Cisco

Cheers !!