AudioCodes Mediant 500 E-SBC, User Manual

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Version 6.8 513 Mediant 500 E-SBC
User's Manual 29. CRP Overview
29 CRP Overview
The device's Cloud Resilience Package (CRP) application enhances cloud-based or
hosted communications environments by ensuring survivability, high voice quality and
security at enterprise branch offices and cloud service customer premises. CRP is
designed to be deployed at customer sites and branches of:

Cloud-based and hosted communications

Cloud-based or hosted contact-center services

Distributed PBX or unified communications deployments
The CRP application is based on the functionality of the SBC application, providing branch
offices with call routing and survivability support similar to AudioCodes' Stand-Alone
Survivability (SAS) application. CRP is implemented in a network topology where the
device is located at the branch office, routing calls between the branch users, and/or
between the branch users and other users located elsewhere (at headquarters or other
branch offices), through a hosted server (IP PBX) located at the Enterprise's headquarters.
The device maintains call continuity even if a failure occurs in communication with the
hosted IP PBX. It does this by using its Call Survivability feature, enabling the branch users
to call one another or make external calls through the device's PSTN gateway interface (if
configured).
Notes:
•
The CRP feature is available only if the device is installed with a Software License
Key that includes this feature. For installing a Software License Key, see
''Software License Key'' on page
572 .
•
For the maximum number of supported CRP sessions and CRP users than can be
registered in the device's registration database, see ''Technical Specifications'' on
page
917 .
•
The CRP application supersedes the SAS application and is the recommended
application to use. However, SAS is still supported by the device. For a detailed
description on SAS, refer to the
SAS Application Configuration Guide .
For cloud providers, CRP ensures uninterrupted communications in the event of lost
connection with the cloud providers’ control systems. For distributed enterprises and
contact centers, CRP is an essential solution for enterprises deploying geographically
distributed communications solutions or distributed call centers with many branch offices.
CRP ensures the delivery of internal and external calls even when the connection with the
centralized control servers is lost.
Table 29-1: Key Features
Survivability Quality of Experience/Service Security

PSTN fallback*

WAN redundancy

Local mode

High availability*

Emergency calling (E911)

Basic call routing between
registering users and
gateway, or any other route
to responding server

Short number dialog (the
short numbers are learned
dynamically in the

QoE monitoring

Call Admission Control

SLA fulfillment

SIP mediation

Media transcoding

Test call agent

Layer 3 to 7 protection

Media encryption

Call control encryption

NAT traversal

Topology hiding