Nortel Media Gateway 3500 Installation, Operation And Maintenance Manual page 202

Table 18-1: Media Gateway 3500 Functional Specifications
Function
Echo Cancellation
Gain Control
Silence Suppression
Voice Activity
Detection (VAD),
Comfort Noise
Generation (CNG)
Fax and Modem Transport
Fax Relay and
Bypass
Modem Bypass
IP Interface
Local Subnets
IP Interface
Separation
Static Routes
DiffServ RFC2474
Control Protocols
MEGACO (H.248)
Installation, Operation, Maintenance Manual
Specification
Cables: G.711, G.728 and G.729E
G.165 and G.168 2000 compliant
Configurable Input/Output Gain Control: -31 dB to +31 dB in steps of 1
dB
G.723.1 Annex A
G.729 Annex B
PCM and ADPCM - Per RFC 3389
3GPP Voice Activity Detection (VAD) 3GPP 26.094
and Comfort Noise Generation (CNG) 3GPP 26.092
Supported on all ports
Group 3 real-time Fax Relay to 14.4 kbps with auto fallback
Tolerant of delays of up to 9 seconds
T.30 (PSTN) and T. 38 (IP) compliant (real-time fax)
CNG tone detection & Relay per T.38
Automatic Fax ByPass (pass-through) to G.711 or ADPCM
Automatic switching (pass-through) to PCM or ADPCM for modem
signals (V.34 or V.90 modem detection)
Different Local IP Addresses and Subnet masks for Operation
Administration & Maintenance (OAM), Control and Media Protocols
ES/4411
OAM 100 Base-TX
Control 100 Base-TX
Media 1 Gigabit optical
Configurable Static Routes tables
Configurable, marking capabilities for Network, Premium Control,
Premium Media, Gold and Bronze DiffServ classes
Call control, Supporting Generic Media Package, Base Root, Tone
202
Media Gateway 3500
Document # LTRT-90704