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UC560 upgrading for more users


we have a UC560-T1E1-K9 with license L-UC-PRO-8U (100 users), we are planning for upgrade to around another 150users.

what will be the best option

1- can we add another UC560 and join the two UC560 to support totally 250 users


2 - if we go for ISR router with CME can the license for UC560 users can be used here or we should go for new license

please can any one suggest an option f

thanks & regards



Re: UC560 upgrading for more users

Hi Edwin,

The total Number of IP phone users that can be squeezed onto a single UC560 is set out in the UC560 datasheet referenced below..

It states "This easy-to-manage platform supports up to 138 phones and 125 voice mailboxes..."

The base UC560 now supports 24 user licenses. But you can increase the numbers of licenses via adding increments of L-UC-PRO-8U= check out table 4 from the reference above.

Depending on your companies Cisco certifications, you could start looking at the Business Edition  products.

For example BE3000 can cater for up to 300 IP phone users but you have to be at least Select certified to sell that product. But if you are a Cisco certified Partner you would know what you can sell and support.

You cannot really create an single  autonomous phone system by adding two UC560's together. They will still be two autonomous phone systems.

regards Dave

Community Member

UC560 upgrading for more users

Thanks for the reply Dave,

I know it will support only 138 users

but i was planning if i register some phones in 1st UC and some in 2nd UC

is it possible that if pstn is connected to 1st UC and if calls come from pstn it is possible to transfer the call to the phones in the 2nd UC as shown below

Community Member

UC560 upgrading for more users

The best thing for you to do is to upgrade to an ISR to support the numbers. This could mean that you’ll need new licenses and new phones depending on the model of phones you use with the UC500. The SBS phones are not supported on the ISR platform for example. Talk to Cisco maybe they’ll do you a deal on the licensing, and you may be able to trade in what you have for a new ISR.

You could run two UC’s. You will lose some functionality when calling between them, they’ll work separately of each other, e.g. phonebooks are separate. The second UC can make PSTN calls via the first UC500 and you’ll be able to transfer between them, although some or all of this may not be supported by Cisco.

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