Cisco CallManager Express 9.0 integration with 2N BlueTower VOIP GSM Gateway

[kunlerulz]

Hello peeps,

I need an urgent help here. I have a Cisco 2901V/K9 bundle and procured a 2N BlueTower VoIP GSM gateway. I have configured all the IP phones and they are all registered and works fine. The challenge I have is integrating the 2N BlueTower VOIP GSM gateway. Can anyone share how I can get this integrated together please?

[Terry Cheema]

I have done integrations with various other GSM gateways and its usually a SIP trunk from the CUCM to the GSM gateway. We used the gateway for mobile calls only, so we had a Route Pattern for mobile calls in CUCM pointing to the SIP trunk to GSM gateway. Vendor did supply some manuals on how to configure the GSM side.

So brief answer to your question is use SIP trunk integration.

-Terry

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[Terry Cheema · Accepted solution]

My apologies, didn't realise the title says CUCME not CUCM.

For CUCME, you will mainly need SIP dial-peer pointing to the GSM gateway:

Try below:

voice service voip

allow-connections sip to sip

dial-peer voice 10 voip
 destination-pattern 6.T   << Lets say you send all calls with a prefix of 6 to GSM
 session protocol sipv2
 session target ipv4:10.1.1.1
 dtmf-relay rtp-nte
 codec g711ulaw   << alaw or ulaw according to config on GSM

incoming called-number .  <<<< If you will be receiving any incoming calls from this GSM otherwise not required

Assuming the GSM side is configured, Try this and see how you go.

Here is an old guide I came across on Google: Click Here

The GSM provider should also supply you with the tested configs - check with them as well.

-Terry

Please rate all helpful posts and mark the thread as answered if you have no other queries

[kunlerulz]

Thanks.

I will try this and revert.