Sccp-Controlled Analog Ports With Supplementary Features; Unified Communications Gateways - Cisco 1941W Configuration Manual

Unified Communications Gateways

SCCP-Controlled Analog Ports with Supplementary Features

Voice gateway ISRs support the Cisco Skinny Client Control Protocol (SCCP), which supplies basic and
supplementary features on analog voice ports that are controlled by Cisco Unified Communications
Manager or by a Cisco Unified Communications Manager Express system. Supported features include:
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For more information on the features supported and their configuration, see
(FXS) Ports with Supplementary Features in Cisco IOS Gateways
Session Initiation Protocol (SIP)
Session Initiation Protocol (SIP) is a peer-to-peer, multimedia signaling protocol developed in the IETF
(IETF RFC 3261). Session Initiation Protocol is ASCII-based. It resembles HTTP, and it reuses existing
IP protocols (such as DNS and SDP) to provide media setup and tear down. See
Configuration Guide
For router configuration information under SIP, see the
SIP Configuration Guide.
Voice gateways provide voice security through SIP enhancements within the Cisco IOS Firewall. SIP
inspect functionality (SIP packet inspection and detection of pin-hole openings) is provided, as well as
protocol conformance and application security. The user is given more granular control on the policies
and security checks applied to SIP traffic, and capability to filter out unwanted messages. For more
information, see
Unified Communications Gateways
The Cisco 3900 series and Cisco 2900 series ISRs support the following Unified Communication
gateways:
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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
174
Audible message waiting indication
Call forwarding options
Call park/pickup options
Call transfer
Call waiting
Caller ID
3-party conference calls
Redial
Speed dial options
for more information.
"Cisco IOS Firewall: SIP Enhancements: ALG and AIC"
TDM Gateways, page 175
Cisco Unified Border Element, page 176
Unified Messaging Gateway, page 176
Chapter Unified Communications on Cisco Integrated Services Routers
at Cisco.com.
Basic SIP Configuration
SCCP Controlled Analog
Cisco IOS SIP
chapter of Cisco IOS
at Cisco.com.