How do I enable SRST on Cisco router?

How do I enable SRST on Cisco router?

1. Cisco Unified SRST Configuration in CUCM

1. Follow the procedure to configure SRST in CUCM at the Main Site.
2. CUCM Device Pool Configuration.
3. Follow these steps to configure Cisco Unified SRST on a Cisco IOS gateway at the Remote Site.
4. Step1: Enter call-manager-fallback configuration mode to activate SRST.

What is SRST mode Cisco?

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.

How do I check my Cisco SRST license?

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.

Is Cisco 3845 end of life?

What is Cisco 3845 End of Life (EOL)? End of Life (EOL) means that the Cisco 3845 will no longer be sold, marketed, or updated it after the EOL date. Cisco continues to offer post-warranty support, but Third-Party Maintenance (TPM) is available for most OEM equipment that is EOL.

What does SRST mode mean?

Survivable Remote Site Telephony
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 the usage of SRST?

Cisco Unified SIP SRST enables the SIP IP Phones to continue making and receiving calls to and from the PSTN. They also can continue making and receiving calls to and from other SIP IP Phones by using the dial peers configured on the router.

What is Srst used for?

What is SRST and MGCP fall back?

srst = Survivable Remote Telephony, when the IP Phone looses connectivity with cm, the phone registers with the default gateway. mgcp fallback = defines the fail over server in the call manager cluster.

How does Cisco SRST work?

What is Srst in networking?

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 MGCP backhaul?

MGCP PRI backhaul is a method for transporting complete IP telephony signaling information from an ISDN PRI interface in an MGCP gateway to Cisco Unified Communications Manager using a highly reliable TCP connection. It Terminates all ISDN PRI Layer 2.

What is SRST reference?

Survivable Remote Site Telephony (SRST) – It is a call processing backup mechanism that allows Cisco IP phones to register to a Cisco router locally during a WAN Failure. Step 2> Adding the SRST Reference in the Device Pool of the Site B Phones.

How big is the Cisco 3845 voice security bundle?

3845 Voice Security Bundle with CME, CUE, and Phone licenses for 35 users, PVDM2-64,NME-CUE, Adv IP Serv,128MB Flash and 512MB DRAM Cisco 3845 HVSEC Bundle with IOS Advanced IP Services, PVDM2-64, AIM-VPN/SSL-3, 100 User SRST License, 25 User SSL VPN License, 512 MB Flash/1GB DRAM

Can a Cisco router support Cisco Unified SRST?

Cisco Unified SRST provides Cisco Unified CM with fallback support for Cisco Unified IP phones that are attached to a Cisco router on your local network.

How to create a SRST reference in Cisco Unified Communications Manager?

An SRST reference is the IP address of the Cisco Unified SRST Router. Create an SRST Reference From any page in Cisco Unified Communications Manager, click System and SRST. On the Find and List SRST References page, click Add a New SRST Reference.

Do you need SRST license for Cisco Unified SCCP?

An SRST feature license is required to enable the Cisco Unified SCCP SRST feature. Contact your account representative if you have further questions. For more information about Licensing on Unified SRST, refer Licensing . You have an account on Cisco.com to download software.