Datasheet

Data Sheet
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 2 of 8
telephony devices, IP-PSTN gateways, H.323 videoconferencing endpoints, and H.323
multipoint control units while facilitating buildout of large-scale multimedia service networks
●
Cisco TDM Gateway: An application that allows time-division multiplexing (TDM) switching
between TDM interfaces or TDM-to-IP interfaces
The Cisco Unified Border Element provides a great deal of functionality and services when
interconnecting IP networks. Generally, these functions can be categorized into four basic areas;
session management, the ability to count and manage the number of session flowing through a
router; interworking, the ability to interconnect different signaling methods and variants;
demarcation, the ability to act as a distinct demarcation point between the two networks; and
security, the ability to act as a Layer 7 device that intelligently allows or disallows traffic between
networks.
The Cisco Unified Border Element supports VoIP protocols such as H.323 and SIP. Video is also
supported for both H.323 and SIP. Table 1 lists the features supported for voice as well as video.
Table 1. Cisco Unified Border Element Features
Feature Support Details
Voice
Protocols
●
H.323 and SIP
Protocol and Signal
Interworking
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H.323 to H.323 (including Cisco Unified Communications Manager)
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H.323 to SIP (including Cisco Unified Communications Manager)
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SIP to SIP (including Cisco Unified Communications Manager)
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SIP to SIP (including Cisco TelePresence calls)
Media Support
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RTP and RTCP
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Sub RTCP for Media Statistics
Media Interworking SIP Delayed Offer to SIP Early Offer Interworking for Audio Calls
Media Modes
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Media flowthrough
●
Media flowaround
Transport Mode
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TCP
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User Datagram Protocol (UDP)
●
TCP-to-UDP interworking
Fax Support
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T.38 Fax Relay
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Fax Passthrough
●
Cisco Fax Relay
Modem Support
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Modem Passthrough
●
Cisco Modem Relay
Dual Tone
Multifrequency (DTMF)
●
H.245 Alphanumeric
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H.245 Signal
●
RFC 2833
●
SIP Notify
●
Key Press Markup Language (KPML)
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Interworking capabilities:
H.323 to SIP
RFC 2833 to G.711 Inband DTMF*
Various SIP to H.323 DTMF Interworking options
Supplementary Services
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Call Hold, Call Transfer, and Call Forward for H.323 networks using H.450 and transparent
passing of Empty Capability Set (ECS)
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SIP-to-SIP supplementary services (holds and transfers) support using REFER
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SIP-to-SIP supplementary services (holds and transfers) support using REINVITE
●
H.323-to-SIP supplementary services for Cisco Unified Communications Manager with Media
Termination Point (MTP) on the H.323 trunk