mgcp fallback

What Is Call Manager Fallback?

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What Is Call Manager Fallback? MGCP fallback enables a gateway to act as local call control when the CUCM server to which the remote site phones and gateway register is offline or WAN connectivity is lost (in which case, Cisco Unified SRST kicks in and offers call control functionality). What is SRST and MGCP fallback?

What Is SRST Mode?

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What Is SRST Mode? 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 does Cisco SRST work? When the system automatically detects a failure, Cisco Unified SRST uses Simple Network Auto Provisioning (SNAP) technology to auto-configure