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New Member

SRST for multiple remote sites question

Hello team,

I appreciate your help and suggestions on the below.

I have the following:

- CUCM at the HQ-Site

- Cisco 3945 gateway at the main site

- Several remote sites where the IP Phones are registered to the HQ's CUCM. The remote routers are Cisco3945/2811/3825.

The client's request is to only have SRST configured at the HQ's router and to have all the IP Phones of all the remote sites, register at the HQ's site SRST.

Please advise whether it's doable and how.

Many thanks!

Regards,

Mazen H. 

3 ACCEPTED SOLUTIONS

Accepted Solutions

SRST for multiple remote sites question

SRST for multiple remote sites question

Yes, you can configure that.

The only thing you need to do is to configure SRST (CME or not CME) at the HQ router and create the SRST reference to it for the remote phones.

G.

VIP Purple

SRST for multiple remote sites question

Hi Mazen,

you do not need voice enabled routers at remote site since the SRST config is being done at central router.

regds,

aman

11 REPLIES

SRST for multiple remote sites question

Hi,

is there any TDM or IP connection to the PSTN at the remote sites?

G.

New Member

SRST for multiple remote sites question

No, it all goes out of the main site's.

New Member

SRST for multiple remote sites question

Correction: The client's request is to only have SRST configured at the HQ's router  and to have all the IP Phones of all the remote sites, register at the  HQ's site SRST, in case of main CUCM failure (not WAN failure). *

SRST for multiple remote sites question

New Member

SRST for multiple remote sites question

Hi Gergely,

So do you confirm that it's doable?

Apologies as I didn't find a straight clear config in your provided link.

Thank you.

Regards,

Mazen H.

SRST for multiple remote sites question

Yes, you can configure that.

The only thing you need to do is to configure SRST (CME or not CME) at the HQ router and create the SRST reference to it for the remote phones.

G.

New Member

SRST for multiple remote sites question

Thanks Gergely.

Any special config needed on the remote routers?

They are not voice-enabled routers, do I need to add the "SL-39-UC-K9=" on the remote routers?

Regards,

Mazen H.

VIP Purple

SRST for multiple remote sites question

Hi Mazen,

you do not need voice enabled routers at remote site since the SRST config is being done at central router.

regds,

aman

VIP Purple

SRST for multiple remote sites question

VIP Purple

SRST for multiple remote sites question

Hi Mazen,

The purpose of SRST gets defeated if WAN link fails and all phones get unregistered.

regds,

aman

New Member

SRST for multiple remote sites question

Hi Aman,

I know, yet it's the client's request for now.

Thank you.

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