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 a branch office router
to provide call processing for the Cisco Unified IP phones that are registered with the router.
How do I enable SRST on Cisco router?
Step 1 Log into Cisco Unified CM Administration and
choose System > SRST
. Step 2 Click Add New. their configuration options, see the system Online Help. Step 4 Click Save.
What is SRST and MGCP fallback?
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.
What is SRST EP?
Customers are encouraged to migrate to the current Cisco Unified
Survivable Remote Site Telephony
(SRST) Smart Licensing offer, by ordering a SRST-EP license for each configured device. … The program is open to all business users of Cisco equipment and its associated brands and subsidiaries.
What port does SCCP use?
Secure SCCP uses
TCP port 2443
.
What is a Cisco cube?
Cisco Unified Border Element (CUBE) is
a unified communications border element
, providing voice and video connectivity between the enterprise IP network and service provider network. It is similar to a voice gateway, except for the replacement of physical voice trunks with an IP connection.
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 Cisco voice gateway?
Cisco IP telephony gateways enable Cisco CallManager to
communicate
with non-IP telecommunications devices. Cisco CallManager supports several types of voice gateways. This section covers the following topics: • Gateway Control Protocols and Trunk Interfaces.
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 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 MGCP 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 Cisco Emergency Responder?
Cisco Emergency Responder
enhances the existing emergency 9-1-1 functionality
offered by Cisco Unified Communications Manager. … Supports automatic notification of customer security personnel when an emergency call is in progress and provides the caller’s location.
What is Cisco Unified Survivable Remote Site Telephony?
Cisco Unified SRST or Unified E-SRST is a critical component of a centralized call-processing architecture in which a Cisco Unified Communications Manager cluster, located at a central site, provides
telephony services
for all sites of an organization.
What do you know about Cisco products?
Products in this category are Cisco’s range of
routers, switches, wireless systems, security systems, WAN acceleration hardware, energy and building management systems
and media aware network equipment. unified computing, unified fabric, data centre switching, storage networking and cloud computing services.
What is RTP port number?
RTP port ranges are
49152 – 64512
. SNMP default port is 161. TFTP default port is 69.
