SRST-Configuration

[maheshgunaratne]

Dear All,

I'm going to implement SRST for remote site on 2921 router.

Need to help on separate PVDM3-32 installation

SRST license installation (FL-CME-SRST-25)

I hope configuration on router side should be -

call-manager-fallback
ip source-address X.X.X.X port 2000
max-ephones 25
max-dn 30

CUCM-Side-

System-SRST

Name- SRST-Site A

Branch (Site A) side IP phone default gateway address

System - device pool

Add  the SRST reference to use SRST-Site A.

Or if there is anything else please let me know(dial plan or etc.) 

Thanks,

[Manish Gogna]

Hi Mahesh,

Please check the following

https://supportforums.cisco.com/document/98721/how-implement-cisco-unified-srst-and-mgcp-fallback

HTH

Manish

[maheshgunaratne]

Hi Manish,

Thanks for reply. and i read ur suggestion.

In my situation i'm not going to configure any PSTN line now(maybe later).

So i guess dial plan will not require.

Also need to know how can i install FL-CME-SRST-25 license to the router.

If i have one  FL-CME-SRST-25,  srst support only 25 Phones?

Thanks.

[Ed Kender]

Only the UC license needs to be applied to the router.  The SRST license is documentation that you did purchase them.  It is not currently enforced in the IOS but I believe that is being looked at in the future.  When you configure the router it will open those licenses up.  It use to be an eval that turned into RTU.  Now I think it is just RTU when configured.

[maheshgunaratne]

Hi Ed,

We have router with FL-CME-SRST-25 so I believe we can add 25 srst phones and I have added around 10phones. I need to purchase more 25 license for same router in this case how can I add extra license to the route?

Thanks

[Terry Cheema]

SRST license is a Right To Use (RTU) license. It means its not enforced in IOS and doesnt need any activation. So it means if you need to add another phones you just go ahead and order the licenses, there is nothing you will need to do on your router.

-Terry