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elesis
www.alliedtelesis.com
RG6x4 SERIES | ADSL2/2+ Residential Gateways
Voice over IP (AT-RG634A/B and
AT-RG644A/B)
The RG6x4 offer a choice of Voice over IP
signaling methods, namely H.323, SIP and
MGCP including NCS 1.0 profile. H.323
p
rovides compatibility with existing H.323
s
ervices (e.g. Microsoft NetMeeting) whilst SIP
a
nd MGCP are newer protocols, optimized for
operation over IP networks.This multiple
protocol support provides maximum flexibility
for service providers, allowing them to provide
an IP telephony service based on cost and
feature-set, rather than being limited by the
protocol used.
Similar
ly, a choice of different voice and data
encoding algorithms are also available
comprising G.711 A-law, µ-law (64kbps), G.729
(8kbps),T.38, so that maximum VoIP
interworking is assured with carrier class IP
Gateways and network switches. Quality of
Ser
vice is pro
vided through mechanisms such
as the Type of Service (ToS) field in the IP
packet, priority tagging of voice traffic using IEEE
802.1p, as well as silence suppression and local
generation of comfort noise – the result is
excellent voice quality.
The AT-RG634A/B allows the connection of
two standard analog phones, modems or faxes
through 2x FXS ports,
or digital devices can
can be connected to the
AT-RG644A/B through
1x ISDN BRI port. Class 5 services are
supported and the VoIP interoperability has
been certified versus major softswitch vendors.
Video Streaming
The RG6x4 offers unique features to optimize
the delivery of video contents to customers on
copper pair
,
namel
y
VLAN,
extended inter
leave
memory, IGMP snooping and proxying. It
supports full IGMP snooping capability (v1/v2)
and individual LAN por
ts can receiv
e different
multicast transmissions e.g. different movies or
TV channels.
The RG6x4
‘snoops’
IGMP packets
in-transit, so it knows which port to forward
the particular multicast data to.This results in
high quality, high bandwidth video streaming
without aff
ecting Inter
net bro
wsing or IP
telephony on adjacent ports. Moreover, the
RG6x4 supports IGMP proxying to allow
f
orwarding of multicast packets at Layer 3 with
or without NAT.
Management and Configuration
The RG6x4 is designed for high volume ADSL
access network deployment; this is reflected in
the Zero Touch Configurator (ZTC), whereby
no user intervention is required when installing
a
unit. ZTC is a distributed configuration system
based on the industry standard Lightweight
Directory Access Protocol (LDAP). ZTC
provides intelligent and automatic configuration
o
f remote RG units. It analyzes incoming status
information from each RG unit and dynamically
creates the appropriate configuration file or
operating system download as required, it then
selects the appropriate download mechanism
(e.g.TFTP, HTTP, HTTPS etc.) to complete the
process.
The ZTC client in the RG initiates the
download process on power up, or on expiry
of its DHCP lease timer. ZTC provides secure
authentication of client devices, resilience
through distributed server operation and in-
built scalability for very large networks.
The RG6x4 also offers the following
conventional management and configuration
interfaces:
• Telnet (using Command Line Interface)
• SNMP v1/v2/v3
Specifications
User’s Ports
4 10/100TX (RJ45)
2 VoIP FXS ports (RJ-11) AT-RG634A/B
1 VoIP EuroISDN LT-S BRI AT-RG644A/B
WAN Port
1 ADSL (RJ-11) Annex A
1 ADSL (RJ45) Annex B
Layer 2 Operation
Layer 2 wirespeed packet switching
IGMP v1/v2 Multicast support
Tag based IEEE 802.1Q VLANs (16 max.)
IEEE 802.1p prioritization
IEEE 802.1Q tag insertion and stripping
Programmable Rate limiting ingress/egress Port Mirroring
ingress/egress traffic
Double QoS queue on each port
Port speed selection 10, 100 or 10/100
1,000 MAC addresses
Layer 3 Operation
NAT
PPPoE
Stateful Inspection Firewall
Intrusion Detection and Blocking System
IPSec/VPN passthrough
Virtual Server
Global IP address pool
Dynamic port opening
DHCP client, server and relay
DNS proxy
PAP/CHAP authentication
Static and Dynamic IP address assignment
RIPv1/v2
VoIP Protocols
H.323 3.0
SIP 2.0
MGCP/NCS 1.0
VOIP Ports (AT-RG634A/B and
AT-RG644A/B)
G.711 a-law and µ-law 64kbps
G
.723 (optional)
G
.726 16/24/32/40kbps
G
.729 8kbps
G.168 LEC 8-32 msec
T.38 Fax Relay
Automatic Fax/Modem Detection
V
oice
Activity Detection (VAD)
Comfort Noise Generation (CNG)
Error Mitigation/Bad Frame Interpolation
Adaptive jitter buffer
REN:
5 per FXS por
t (A
T-RG634A/B)
ISDN BRI Power feed: 100mA, 4W (AT-RG644A/B)
RTP voice packet encapsulation