Information Technology Reference
In-Depth Information
■
WS-X6608-T1/E1
■
IP/VC 3500 series (videoconference bridge)
Note that Cisco is constantly adding to its range of hardware conference resources.
Videoconference bridges support H.261, H.263, H.320, and so on. They can support a mix of users with video and audio endpoints. If
the Cisco IP Voice Media Streaming Application service is running, no further configuration is necessary to take advantage of it as a
conferencing resource.
Hardware conference bridges must be added via Cisco CUCM Administration by navigating to
Media Resource, Conference
Bridge
.
Transcoding
Transcoders enable devices using different codecs to communicate by converting a voice stream using one codec into a voice stream
using another codec. If one device outputs and is able to process only a G.711 stream, and it has to communicate with another device
that outputs and is able to process only a G.729 stream, this requires the use of a transcoder to convert between the G.711 and G.729
streams.
Cisco hardware transcoders can support several codecs, including G.711, G.723, G.729, and GSM. Cisco hardware transcoding
resources include NM-HDV2, NM-HD-1V/2V/2VE, WS-SVC-CMM-ACT, NM-HDV, and WS-X6608.
You can configure transcoders in Cisco CUCM Administration by going to
Media Resource, Transcoder
.
Note that transcoders can also function as media termination points (MTP) and can provide supplementary services for H.323
endpoints where necessary. MTPs are described in the following section.
