Chapter 1 Functionality
About Gateway Features
Table | Gateway Feature Summary (continued) | |
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Feature |
| Description |
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Dual video |
| The gateway supports H.239 |
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| DuoVideo technology. Dual video streams enable a screen to carry video images |
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| from one source while simultaneously displaying images from a second source. |
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Hot swap |
| The gateway features hot swap functionality that you can use to remove and |
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| replace gateway cards under power. |
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Conceal caller ID | The gateway supports a conceal caller ID feature that instructs the gatekeeper to | |
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| conceal the identity of the calling endpoint on the IP or ISDN network, whether |
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| the presentation restricted feature is enabled or not. |
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H.323 fast start |
| The gateway H.323 fast start feature enables endpoints to join a voice conference |
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| in the gateway more quickly. |
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ISDN rollover (available in Cisco Unified | The gateway features ISDN rollover. In this feature, the gateway sends a “busy | |
Videoconferencing 3545 PRI Gateway | out” channel request to the PSTN switch when the current PRI connection is left | |
only) |
| with less than a predefined number of available B channels. The PSTN switch |
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| “rolls over” to the next available gateway. |
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Network Specific Facility (available in | The gateway provides support for Network Specific Facility Information | |
Cisco Unified Videoconferencing 3545 | Elements (NSF IEs) which enable system administrators to specify to service | |
PRI Gateway only) | providers the equipment, service, or network through which they want a call | |
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| routed. |
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ISDN connection failure | The gateway responds to ISDN connection failure events, by unregistering from | |
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| its gatekeeper. The gatekeeper is forced to send new |
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| different gateway, thus ensuring high call completion rates. The gateway |
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Downspeeding |
| The gateway features downspeeding functionality. In the downspeeding feature, |
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| the gateway attempts to reconnect a disconnected video call either at a lower |
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| bandwidth or as a voice call. Downspeeding contributes to a higher percentage of |
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| call completion on the network. The gateway supports downspeeding at call setup |
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| and in |
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Multiple trap server support | The gateway supports up to three SNMP trap servers. | |
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H.239 support |
| The gateway supports the H.239 protocol in |
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| calls. |
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Encryption support | The gateway supports | |
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| networks, and H.233 and |
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| ISDN networks. |
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H.243 Conference Control support | The gateway supports the H.243 protocol in | |
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| calls. The gateway identifies the protocol version that an IP endpoint uses and |
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| sends H.239 capabilities only to those endpoints working with protocol version |
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| 4.0 or later. |
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The gateway supports connectivity to the IP network through a gatekeeper, or | ||
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| directly to a peer device such as Cisco Unified Communications Manager. |
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IP network connections | The gateway has one | |
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| connects to an IP segment through a direct connection to a network switch. |
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Table
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.6
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