![]() Note: Cisco ITS is not the same, nor are the features the same, as the Survivable Remote Site Telephony (SRST) feature that is used in conjunction with Cisco CallManager. ![]() This document describes a sample deployment of the ITS feature in a sample network. Cisco ITS can be deployed in instances where a branch office either does not have a WAN or has WAN connectivity through satellite links.Ĭisco ITS makes sense in situations where a customer would like to add a telephony service at such a site without necessarily requiring all of the telephony features found in Cisco CallManager. ![]() The basic concept is to provide minimal PBX/key-switch functionality to a small number of IP phones directly attached to the voice gateway. ![]() Cisco IOS Telephony Service (ITS), formerly known as IP Keyswitch, is an IP Telephony call processing solution integrated into Cisco IOS ® Software that fits in the Cisco Architecture for Voice, Video, and Integrated Data (AVVID).
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