SLRG & SRST

[sourajit01]

1. What is Standard Local Route Group useful? When and why is it used?

2. What is SRST. What are the things to keep in mind while creating it. Please share any documents on SRST. 

[Hari Prasad]

SLRG and SRST both are differnent.

SLRG used for call routing purpose. It is bassically used to reduce the number of route list. There is an option to select Route list on Device Pool.

Refer below link -

https://community.cisco.com/t5/ip-telephony-and-phones/why-do-we-use-the-quot-standard-local-route-group-quot-in-cucm/td-p/2794912

We use SRST feature in case of WAN failure from CUCM to Phones.

With SRST feature , phone can be registered on Local Voice gateway to use limited voice functionality.

https://www.cisco.com/c/en/us/products/unified-communications/unified-survivable-remote-site-telephony/index.html

Regards

Hari