Cisco Feat Lic Survivable Remote Site Telephony up to 25 Users FL-SRST-25 Hoja De Datos

Los códigos de productos

FL-SRST-25

Data Sheet

Page 2 of 9

within the Cisco IOS

Software, to help provide high-availability IP telephony to branch offices.

When access to Cisco Unified Communications Manager from the branch office is impeded, for

example, as a result of a WAN link failure, Cisco Unified SRST provides telephony backup

services to help ensure that the branch office has continuous telephony service over the Cisco

network infrastructure deployed in the branch location. The enhanced reliability provided by Cisco

Unified SRST makes Cisco Unified Communications a cost-effective solution to help ensure

telephony operation to all users in an organization, whether they are located in the headquarters or

in a branch office.

Furthermore, in certain environments, the security of telephony communication is a critical

requirement. The Cisco Unified Communications solution supports secure telephony

communication between any two phones in the network, whether those phones are in the

headquarters facility or at a branch office. Cisco Unified SRST contributes to this secure telephony

communication solution by supporting the same secure telephony protocols in the branch office

when the branch location loses communication with the centralized Cisco Unified Communications

Manager.

How It Works

Cisco developed Cisco Unified SRST technology for all Cisco IOS Software platforms that support

voice (refer to Table 2 for a complete list). Cisco Unified SRST integrates network intelligence into

Cisco IOS Software, which acts as the call-processing engine for IP phones located in the branch

office during a WAN outage. Figure 1 shows a centralized Cisco Unified Communications Manager

deployment with a remote site experiencing WAN failure, and the Cisco router using Cisco Unified

SRST.

Figure 1. Centralized Cisco Unified Communications Manager with Cisco Unified SRST Deployment