VoIP account as SIP Trunk

[tsubakaran]

Hi Friends,

I am new to cisco unified call manager, preparing ccna voice so i installed CUCM in VMware and playing around with CIPC soft phone, all good. My question, is it possible to add a sip voip a/c as trunk in cucm to make outbound and inbound call test?

[Dennis Mink]

The short answer is YES.

I am assuming you are setting it up without the use of a cisco router that faces the internet?!

in which case you will need to do some tweaking on your internet router, such as port forwarding port 5060, allowing incoming RTP etc.  depending on what internet router you have, this will probably be most daunting.

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[tsubakaran]

Hi,

yes , this for my all testing and learning. I can do the port forwarding for the required ports in my home router.

i want to know how set up the voip account in cucm so that internal phones use to make outbound calls, can you pls guide me.

[Dennis Mink]

There is a lot of documentation on the web about this.  give it a shot first.  basically you will need to configure a SIP trunk in CUCM with your ISP's IP address/hostname as the destination after that you can point the route patterns in CUCm to use that SIP trunk.

One thing you will have to bare in mind, is that if your IPSP requires authentication, you CANNOT set up a sip trunk straight into your ISP, but you will need an IP-IP gateway/CUBE that can do SIP authentication towards your SIP provider. if you havent got the hardware to build a CUBE, maybe use GNS3.

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[tsubakaran]

My voip account needs authenticaton, so i understand now I cannot setup this account as trunk in CUCM.

I have Cisco SPA 3102 gateway, I hope i can configure my voip accout on this adapter then setup the trunk in CUCM to use this as gateway. Am I correct?

[tsubakaran]

I would like to use spa 3102 with CUCM 8.6 as gateway, can anybody help to guide?

[Leo Laohoo]

Set your CUCM to talk to your SIP provider first.  Once the CUCM has fully registered with your SIP provider, you can configure extensions and get the SPA to talk to the CUCM using the extension phone details.

[tsubakaran]

I don't have SIP provider so I have a plan to use SPA3102 as a gateway. If I want to register SPA in CUCM what type of device i need to select in the gateway list (avalable devices in the image)?

[Selvarathnam Nadar]

Hi,

Try H.323 Gateway and give the device name as the IP address of your SPA device and try playing this.

[tsubakaran]

I tried all the way, CUCM doesn't like to register. I have to play with more time, will see. anyway thanks for your suggestions.

[Carlo Poggiarelli]

Hi.
The CUCM has not the ability to register to an authenticated sip provider.
To use make calls outside the cucm cluster using sip provider, you need a Cisco router with CUBE functionality or a third party sip based softswitch.


HTH

Regards

Carlo

Sent from Cisco Technical Support iPhone App

[Dennis Mink]

or use ASTERISK, because that can do SIP authenticated trunks! (not very useful when studying ccna voice, I do admit)

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[tsubakaran]

It is interesting, i will try once completed the exam.