Chapter 1 Functionality
About Gateway Features
Table | Gateway Feature Summary (continued) |
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Feature |
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| The gateway supports connectivity to the IP network through a gatekeeper, | |||
connectivity |
| or directly to a peer device such as Cisco Unified Communications | ||
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IP network |
| The gateway has one | ||
connections |
| and connects to an IP segment through a direct connection to a network | ||
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Table |
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Table | Cisco Gateway Feature Specifics |
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Feature |
| Cisco Unified | Cisco Unified | |
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| Videoconferencing 3527 PRI Gateway | Videoconferencing 3522 BRI Gateway | |
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Supported ports |
| 1 PRI ISDN port | 4 BRI ISDN ports | |
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Supported video | H.320, H.323 (using Cisco Stack v4.0) |
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conferencing protocols |
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Supported audio | The term audio transcoded video calls refers to the process whereby an audio | |||
codecs |
| stream in a multimedia call can be transcoded from one codec type to another. | ||
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| Basic and advanced audio coding supported codecs: G.711, G.722, G.722.1, | ||
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| G.723.1, G.728 |
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Audio Transcoding | G.711 (ISDN) < > G.723.1 (IP) for up | G.711 (ISDN) < > G.723.1 (IP) for up | ||
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| to 30 voice channels. | to 8 voice channels. | |
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| G.711 (IP) < > G.728 (ISDN) for up to | G.711 (IP) < > G.728 (ISDN) for up to | |
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| 20 audio transcoded video channels. | 8 audio transcoded video channels. | |
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| The gateway automatically performs |
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| translation between the IP and ISDN |
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| sides if needed. |
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| Note When your Cisco unit |
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| includes both a gateway and a |
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| MCU, G.728 transcoding is |
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| supported on the MCU only. |
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Supported video | H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264 | |||
protocols |
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Supported video | VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF | |||
resolutions |
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Supported bandwidths | 56, 64, 112, 128, 168, 192, 224, 256, | 56, 64, 112, 128, 224, 256, 336, 384 | ||
(Kbps) |
| 280, 320, 336, 384, 448, 512, 672, | and 512 | |
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| 768, 1288, 1472, 1680 and 1920 |
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| Note Bandwidth rates of 256 Kbps and up support the G.722 audio codec. | ||
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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.5
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