Download Megaplex-2100H Module Voice over IP Gateway/Gatekeeper Module

Megaplex-2100H Module
MVG
Voice over IP Gateway/Gatekeeper Module
• Proprietary RTP multiplexing
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FEATURES
• Voice over IP
Gateway/Gatekeeper
module for
Megaplex-2100H/2104H
systems
• Suitable for both
phone-to-phone or
PC-to-phone applications
• Fully compatible with the
following H.323v3
standards:
!
H.225.0 (RAS, Q.931,
RTP, RTCP)
!
H.245
• Integral gateway enables
standard compressed voice
over IP (VoIP) applications
•
•
•
transmits voice packets using
less bandwidth and causing
less congestion (providing up
to 1:16 compression)
Supports Group III fax relay
over IP
Supports DTMF relay over a
separate reliable channel for
undistorted signaling
Gateway supports both Auto
Connect for direct dialing
“hot-line” applications and
Voice Switching for PBX-like
call switching
Integral VoIP gatekeeper for
H.323 compliant call control
and registration functions
Gatekeeper supports
multiple zones
Gatekeeper supports both
Direct and Routed modes
for call setup
SNMP agent supporting
VoIP (H.341) for standard
Network Management
Systems
DESCRIPTION
• The MVG module provides both
the gateway and gatekeeper
functionality required for Voice
over IP (VoIP) applications.
Operating in the
Megaplex-2100H/2104H systems,
MVG enables transmitting
compressed voice/fax traffic over
IP networks.
• The MVG module incorporates an
integral gateway component. The
gateway receives compressed
voice frames from residing voice
modules (digital interface
MVC-8/E1, MVC-8/T1 or analog
interface MVC-4N, MVC-8N), and
transfers them over IP networks
using the H.323 protocol.
• The MVG’s integral gatekeeper
component is applied to translate
a call alias (phone number) to an
IP address. It provides the call
registration, setup and control
functions, as well as the IP address
assignment and resolution
functions required for the VoIP
applications.
• MVG includes an SNMP agent
that supports VoIP. The agent’s
MIB (Management Information
Base) is compliant with the H.341
standard. The SNMP agent
enables managing the MVG
(including configuration and
performance monitoring) via the
RADview Network Management
System as part of the
Megaplex-2100H application.
Alternatively, MVG can be
managed by any MIB browser as
an SNMP agent.
Megaplex-2100H Module
MVG
Voice over IP Gateway/Gatekeeper Module
GATEWAY
• Conventional voice transmission
over IP methods can be wasteful
in terms of bandwidth and
congestion. Transmission of
individual calls in short packets,
each with its own header,
increase bandwidth demands. In
addition, the resultant high
number of short packets cause
greater network congestion, with
packets constantly interrupting the
transmission of other packets.
• MVG provides an integral VoIP
separate reliable channel for
undistorted signaling. The DTMF
(tone) signaling commonly used
for automated telephone
answering/information systems is
sensitive, and if slightly distorted
by compression/decompression,
may not function properly. To
avoid this, the DTMF signaling is
separated from the compressed
voice data and transmitted on a
different reliable channel.
gatekeeper for H.323 compliant
call control and registration
functions. The gatekeeper
technology provides enhanced
functionality for multiple zone
support, multiple gateway
operation and resource usage
control.
• The MVG gatekeeper supports
both Direct and Routed modes for
the call setup process. The Direct
mode allows the end points to
perform the call setup process,
without the mediation of the
gatekeeper. In this mode, the
gatekeeper only provides address
resolution information for the
routing information needed by the
call originator to reach the
destination. In the Routed mode,
the gatekeeper performs the
entire call setup process (Q.931
session). This latter mode provides
better security.
• Group III Fax Relay over IP is
MVG uses RAD’s proprietary RTP
multiplexing method to combine
voice packets from several calls
into one long packet with a single
header. RTP multiplexing
decreases the total bandwidth
requirement for the voice traffic,
while also reducing delays in the
routers and dropped packets
when queues overflow. The RTP
multiplexing is especially
beneficial in aplications with high
number of calls.
• MVG’s gateway provides a
GATEKEEPER
• MVG enables DTMF relay over a
supported by MVG, with standard
fax rates between 2.4 and
14.4 kbps.
• Both Auto Connect for direct
compressed voice system (CVSoIP)
application, that enables
point-to-point transmission of
compressed voice calls over IP
(providing a compression rate up
to 16:1). It uses RTP multiplexing
by opening a voice stream
between a pair of gateways. RTP
multiplexing can also be employed
in multipoint applications.
dialing “hot-line” applications and
Voice Switching for PBX-like call
switching are supported. With
Auto Connect, the user on the
local Megaplex-2100H side picks
up the phone while the
pre-configured phone on the
remote Megaplex-2100H side rings
automatically. Voice Switching
enables the Megaplex-2100H to
provide PBX-like call switching
where dialing an internal extension
number is enough to reach a
phone located at a remote
location. For supporting
international calls, MVG can
handle telephone numbers as long
as 24 digits.
APPLICATIONS
E1
MVC-8/E1
modules
MVC-8/T1
modules
MVG
E1
IP Network
PBX
PSTN
PBX
MP-2100H
MP-2100H
Router
T1
T1
MVG
Router
Figure 1. Compressed Voice over IP Network
Megaplex-2100H Module
MVG
Voice over IP Gateway/Gatekeeper Module
SPECIFICATIONS
GATEKEEPER
• Voice Channels Supported
GATEWAY
Up to 60
• Voice Channels Supported
RAS and Q.931 as per H.225.0
• Compliance
H.323v3 standards
(backward compliant with H.323v2):
!
!
• Interface
• Compliance
Up to 60
H.225.0 (RAS, Q.931, RTP,
RTCP)
H.245
• Digitizing Techniques and
Compressed Data Rates
! G.711 (packetized PCM):
64 kbps
! G.726 (ADPCM), G.727
(EADPCM): 16, 24, 32, 40 kbps
! G.729A (CS-ACELP): 8 kbps
! NetCoder (proprietary):
6.4, 7.2, 8.0, 8.8 kbps
! G.723.1 (MP-MLQ):
5.3, 6.3 kbps
• Supported Fax Rates
CONTROL PORT
The dedicated control port is provided
to facilitate debugging procedures
Note: A single MVG module can provide both
gateway and gatekeeper functionality for
applications supporting up to a single E1/T1
trunk.
To provide both gateway and gatekeeper
functionality for applications supporting more
than a single E1/T1 trunk, it is advisable to
utilize a second MVG module. One MVG
serves as the gateway and the other MVG as
the gatekeeper.
V.24/RS-232
• Connector
RJ-45
• Data Rates
115.2 kbps, async
• Data Format
8 bit, no parity
LAN INTERFACE
• Standard
IEEE 802.3
• Type
10BaseT (UTP)
• Connector
RJ-45
2.4, 4.8, 7.2, 9.6, 12.0, 14.4 kbps
MVC-8/T1
modules
T1
MVG
PBX
Management
MP-2100H
Router
T1
MVC-8/T1
modules
MVG
PBX
IP Network
IP Network
Management
T1
Router
Third-party
VoIP Gateway
MP-2100H
PBX
Third-party
VoIP Gatekeeper
Fax
Management
Network Management
System
Router
MVC-8N
FXS
MVG
MP-2104H
Figure 2. Standard VoIP Application with Third-Party VoIP Gateway and Gatekeeper
Megaplex-2100H Module
MVG
Voice over IP Gateway/Gatekeeper Module
ORDERING
GENERAL
• Indicators
LAN ERR (red) – lights when an
error is detected on the LAN
interface
LAN DATA (yellow) – lights when
packets are received
from/transmitted to LAN
10BaseT (green) – lights when
LAN port is connected to an
active Ethernet LAN
MP-2100M-MVG/UTP
Voice over IP Gateway/Gatekeeper
Module for MP-2100H/MP-2104H
• Power Consumption
3.4W (680 mA on +5V line)
E1
Voice
PBX
E1
MVC-8/E1
modules
VoIP
MVG
TinyRouter
MVC-8/E1
modules
MHS-4
Voice and
Data over FR
VoFR
Data
MP-2100H
Frame Relay
Network
MHS-4
Voice
PBX
VoIP
MVG
TinyRouter
Voice and
Data over FR
VoFR
MP-2100H
Data
Router
Router
Figure 3. Integration of Data and IP Voice over Frame Relay Network
data communications
www.rad.com
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Tel Aviv 69719, Israel
Tel: (972) 3-6458181
Fax: (972) 3-6498250, 6474436
Email: [email protected]
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Tel: (201) 529-1100
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Email: [email protected]
421-130-12/01
 1988–2001 RAD Data Communications Ltd.
All other trademarks are the property of their respective holders.
Specifications are subject to change without prior notice.