Session Initiation Protocol (Sip); Media Gateway Control Protocol (Mgcp); Line-Side Protocols - Cisco 1941W Configuration Manual

Chapter Unified Communications on Cisco Integrated Services Routers

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
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

Media Gateway Control Protocol (MGCP)

Media Gateway Control Protocol (MGCP) RFC 2705 defines a centralized architecture for creating
multimedia applications, including Voice over IP (VoIP). See
Configuration Guide
ISRs are configured primarily as residential gateways (RGWs) under MGCP. For residential gateway
configuration information, see the
chapter of
H.323
H.323 is an umbrella recommendation from the International Telecommunication Union (ITU) that
defines the protocols to provide voice and video communication sessions on a packet network. The
H.323 standard addresses call signaling and control, multimedia transport and control, and bandwidth
control for point-to-point and multi-point sessions. See
information about H.323.
For router configuration information, see the
Configuration

Line-side Protocols

The Cisco 3900 series and Cisco 2900 series ISRs support the following line-side call control protocols:
•
•
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
for more information.
"Cisco IOS Firewall: SIP Enhancements: ALG and AIC"
for more information.
Cisco IOS MGCP and Related Protocols Configuration
Guide.
SCCP-Controlled Analog Ports with Supplementary Features, page 174
Session Initiation Protocol (SIP), page 174
Basic SIP Configuration
Configuring an RGW section of the
Cisco IOS H.323 Configuration Guide
Configuring H.323 Gateways
Call Control Protocols
Cisco IOS SIP
chapter of the Cisco IOS
at Cisco.com.
Cisco IOS MGCP and Related Protocols
Basic MGCP Configuration
Guide.
chapter of Cisco IOS H.323
for more
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