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ITSP - Internet Telephony Service Providers That work with the UC500

There are several Internet Telephony Service Providers that will work with the UC500. Internet Telephony Service Providers or ITSP generally over SIP trunks over the public internet. Since they are over the public internet you do not get guaranteed quality of service (QOS).

link to configuring nexVortex@

working CallManager Express Configuration with via talk

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New Member

This is correct there are many ITSP's that you can connect your UC500 to in the UK. However there is only one Cisco Certified Internet Telephony Service Provider (ITSP) for the UC500 in the UK. That company is Breeze8 ( and the telephone number is 01635 246030. Breeze8 offer a certified migration plan onto there SIP trunk service for UC500. Breeze8 are also the only certified Cisco Hosted IP Telephony Provider in the UK. If anyone wants to confirm these details and that they have a Cisco verified process for migrating UC500's to SIP. Please feel free to email Philip Smith the head of Cisco UK Service Providers on
I am James Harries the Technical Director of Breeze8 and we have over 100 UC500's connected to our service as well as hundreds of Cisco end-points connected via our Cisco Hosted IP Telephony Service. If anyone wants a copy of a migration plan or needs some straight forward advice on their migration plan. Or even to speak to any of our customer that have migrated and how seemless it was. Please email me at and I will happily help.

New Member be very honest. All ITSP can be trunked to your UC500 or even a CME router but the real deal is who is providing official support for it.....

I did not find any ITSP offering official support for cisco equipements.

One thing I would like to mention is, I am user of Nomado Telecom. I have Cisco 2801 router running in my office. They are the first ITSP offering live chat support so that I wont have to wait for problem resolution. Support is just a click away.

Their Support Engineers are Cisco Certified and they know very well how to fine tune the equipements.

I recommend you to try them atleast once. Best Quality, Best Support, Cheap rates. What else you can expect from an ITSP?

Just visit them