What is Cisco SRST mode?

SRST is an IOS feature that enables routers to provide call-handling support for Cisco IP Phones if they lose their connection to a remote Primary CUCM which can occur if the WAN connection to the main site is down.

What is SRST used for?

Cisco Unified SRST enables routers to provide basic call-handling support for Cisco Unified IP Phones when they lose connection to remote primary, secondary, and tertiary CUCM servers or when the WAN connection is down.

What is SRST in CUCM?

Survivable Remote Site Telephony (SRST) is a Cisco Unified Communications Manager (CUCM) call processing backup mechanism that allows Cisco IP phones to register to a Cisco router.

What is CME SRST?

Viewing the output of show license detail cme-srst indicates that there is no configuration present and the EULA has not been accepted.

How do I check my Srst status?

To check the status of connection with cucm and the current status, use the below command: show ccm-manager fallback-mgcp —Displays a list of Cisco CallManager servers and their current status and availability.

How do you test Srst?

SRST testing

1. Create an ACL that blocks the remote router and a local phone(s) from reaching the Call Manager servers.
2. Check how long it takes for the router PSTN ports to register to the router.
3. Check how long it takes for the phone(s) to register to the router.
4. Dial-plan (off-net and on-net calls). ( On-net only ).

How do I check my SRST status?

How do I enable CME SRST?

It will cover how to activate the CME/SRST feature license.

1. Go to global configuration mode. Issue the config t command.
2. Issue the telephony-service command.
3. Issue the max-dn and max-ephone commands.

How do I find my Srst license on my router?

1. Purpose. The purpose of this document is to explain how license activation works on a Cisco ISR-G2 (19xx/29xx/39xx) router.
2. Go to global configuration mode.
3. Issue the telephony-service command.
4. Issue the max-dn and max-ephone commands.
5. The output should show the License State as Active, In Use.

How to configure Digest credentials on Cisco Unified SRST?

Configure the digest credentials on Cisco Unified Communications Manager, and username password configuration under voice register pool on Unified E-SRST. Digest Configuration is not required with the id device-id-name CLI command in Cisco Unified SRST Release 12.2.

What is the difference between Cisco Unified SRST and unified e-SRST?

While Cisco Unified SRST supports only the basic voice hunt group features, Unified E-SRST supports the advanced voice hunt group features such as HLog, shared lines, and B-ACD. To configure the basic Unified E-SRST, perform the following procedure:

How does Cisco Unified CME B-ACD AA work?

The following example enables a Cisco Unified CME B-ACD AA service called aa on dial peers that are associated with incoming voice ports 1/1/0 and 1/1/1. The calls over these voice ports are sent to the Cisco Unified CME B-ACD pilot number (800 555-0100).

What does the asterisk (*) mean in Cisco Unified CME?

In Cisco Unified CME 4.0 and later versions, an asterisk (*) can take the place of an extension number to represent a wildcard slot. Any agent at an authorized ephone-dn can dynamically join and leave a hunt group if a wildcard slot is available.