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How do I test SRST mode?

by Rhyley Bryan

How do I test SRST mode?

Verifying and Troubleshooting SRST

  1. Create an SRST reference.
  2. Create a new device pool using the SRST reference from Step 1.
  3. Assign the new device pool to IP phones for testing.
  4. If no IP phones exist, or if you are testing an MGCP gateway, add a null route to CallManager.

What is Srst testing?

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.

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.

How does Cisco SRST work?

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.

How is SRST used in remote site telephony?

SRST technology is widely used in the centralized call processing model where branch sites do not have any local call processing capabilities. Cisco IP phones at branch locations register with CUCM over wide area network (WAN) links. All call setup and call teardown functions of the branch site Cisco phones are carried over the WAN links.

What does SRST stand for in Cisco router?

SRST 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.

Which is an example of SRST in iOS?

Example 5-1 outlines SRST configuration. Example 5-1 defines IOS commands that help configure SRST on Cisco IOS router. The key commands are as follows: ip source-address defines the address of a physical or virtual (loopback) interface on the router with which the phones should register while using the SRST process.

What are the SIP settings for SRST and E-SRST?

SIP configuration starts with change of mode from cme to srst. max-dn defines the maximum directory numbers (DNs) to be supported during SRST. max-pool defines the maximum number of SIP voice register pools. 5. SRST IOS Dial Plan | Next Section Previous Section