Two CUCM integration

[hcl-pawan]

We have integrate our call manger 5.1 with CUCM 5.0 in another location using ICT non gate keeper. Due to some problem in IP scheme We routed our call manager using Static NAT towards them. Now when I dial them phone is ringing and we are able to talk. but when they call me  phone is ringing but unable to speek each other. Please help me to silve it out.

[Aman Soi]

Hi Pawan,

Site A can call site B and working fine.

Site B calls Site A ,phone rings and unable to speak .

Can u please check the routing?

regds,

aman

[hcl-pawan]

Hi amanso

I Have checked the route and i feel this is due to the static NAT I have used. Can u suggest any other possible way

[nirmalissac]

Check access lists, if RTP ports are allowed, also if call signal and rtp traffic are taking different paths / firewalls.

A firewall will open dynamic ports for RTP traffic only if the call signals had passed through / processed by the same firewall

[hcl-pawan]

Hi Nirmal

I have checed the access list. this is ok. I have opened for all the tcp and UDP ports

[Aman Soi]

Hi Pawan,

What you have done is Natted the actual  Call Manager IP address of say Site A to static IP and the same has been advertised to site B?

Why u are saying that Static IP could be a problem?

regds,

aman