RADVision SCOPIA 400 Guía de usuario descargar pdf (Pagina 14)

4 SCOPIA 400/1000 Gateway User Guide

About Gateway Features

Table 1-2 lists features for specific RADVISION Gateways.

ISDN connection failure The Gateway responds to ISDN connection failure events, by unregistering from its

gatekeeper. The gatekeeper is forced to send new IP-to-ISDN calls through a different

gateway, thus ensuring high call completion rates. The Gateway re-registers to the

gatekeeper when the ISDN connection is restored.

Downspeeding The Gateway features downspeeding functionality. In the downspeeding feature, the

Gateway attempts to reconnect a disconnected video call either at a lower bandwidth or as a

voice call. Downspeeding contributes to a higher percentage of call completion on the

network. The Gateway supports downspeeding at call setup and in mid-call.

Multiple trap server support The Gateway supports up to three SNMP trap servers.

H.239 support The Gateway supports the H.239 protocol in ISDN-to-IP calls and in IP-to-ISDN calls.

Encryption support The Gateway supports H.235-compliant AES 128 encryption for calls over IP networks, and

H.233 and H.234-compliant AES 128 encryption for calls over ISDN networks.

H.243 Conference Control

support

The Gateway supports the H.243 protocol in ISDN-to-IP calls and in IP-to-ISDN calls. The

Gateway identifies the protocol version that an IP endpoint uses and sends H.239

capabilities only to those endpoints working with protocol version 4.0 or later.

Peer-to-peer connectivity The Gateway supports connectivity to the IP network through a gatekeeper, or directly to a

peer device such as Cisco Unified Communications Manager.

IP network connections The Gateway has one 10/100Base-T Ethernet IP port (on the front panel) and connects to an

IP segment through a direct connection to a network switch.

Table 1-1 Gateway Feature Summary (continued)

Feature Description

Table 1-2 Gateway Feature Specifics

Feature Gateway P20 SP Gateway S40 SP

Supported ports 2 PRI ISDN ports 4 serial ports

Supported video

conferencing protocols

H.320, H.323 (using

RADVISION Stack v4.0)

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RADVision SCOPIA 400 Guía de usuario Pagina 14