Operation Manual – Getting Started
H3C VG Series Voice Gateways
Chapter 1 Overview
1-3
1.2 VG Feature List
Table 1-1
VG feature list
Functional
module
Attributes
IP voice
Supports silence suppression, echo cancellation,
comfortable noise, jitter buffer and volume turning.
Supports special PBX functions (do-not-disturb,
call forwarding on busy, unconditional call
forwarding, alarm call service, group line access).
Supports fast connection and tunneling function.
Supports caller identification display (CID).
Supports voice communication via Loopback
interfaces.
Supports manual detection and auto detection on
busy tone.
Supports such policies as PSTN backup and GK
backup.
Supports static, dynamic and hybrid VoIP routing
policies.
Supports fast and normal transceiving of voice
and data packets.
Fax
In compliance with ITU-T Recommendations T.30
and T.38.
Multiple fax parameters can be customized.
Supports fax communication over IP network.
Call control
protocol
H.323
Voice CODEC
mode
G.711 A, G.711U, G.723r53, G.723r63, G.729A,
and G.729r8
Voice
RADIUS
Supports voice RADIUS authentication,
authorization and accounting.
Supports prior authentication of local voice users.
Supports user authentication based on
account/password, caller number and voice caller
number process.
Supports one-stage dialing and two-stage dialing.
Supports interworking with RADIUS servers of
various types.
Voice
attributes
GK Client
Serves as GK client for exchanging RAS
messages with GK server
Link layer
protocol
LAN
Supports Ethernet_II and Ethernet_SNAP frame
structure.
In compliance with IEEE 802.2 and IEEE 802.3
