Product specifications

Dialogic® BorderNet™ 4000 SBC Product Description Document

H.245 Type SDP Media Type

g722 G722

g728 G728

g729wAnnexB G729

g729 G729 fmtp:18 annexb=no

h261VideoCapability H261

h263VideoCapability H263

Media entering the BorderNet 4000 SBC exits the system as per the codec mapping. For

example, H.245 type g729wAnnexB exits the system on the SIP side as media type G729.

Note: The BorderNet 4000 SBC IWF uses H.323 Version 4 or later and SIP as specified in

RFC3261. Most H.323 signaling uses TCP transport; the exception is RAS, which uses UDP

transport.

Software-Based Transcoding

The BorderNet 4000 SBC supports software based real-time transcoding of audio, video, fax

and DTMF sessions by utilizing existing on-board computer (CPU) resources on the

platform. Traditionally, a resource-intensive media transcoding operation has required the

assistance of specialized hardware components, such as Digital Signal Processors (DSPs),

and is very expensive. Dialogic has incorporated technology from its industry-leading media

server and conferencing products in the BorderNet 4000 SBC to deliver the industry’s first

scalable transcoding solution.

The BorderNet 4000 SBC software transcoding has several unique features, including:

• Dynamic Transcoding – The BorderNet 4000 SBC determines the transcoding

necessary for each call by comparing the ingress and egress codec offers and re-

routes the media through an internal transcoding engine.

• Comprehensive Codec Support – The BorderNet 4000 SBC software transcoding

includes an extensive list of wireline and wireless codecs. In the current release, the

Audio and DTMF transcoding solution is supported. Video and Fax transcoding

services will be available in a future release.