Nortel Media Gateway 3200 User Manual page 218

Item
Voice Compression
(Independent dynamic vocoder
selection per channel)
Silence Suppression
Voice Activity Detection (VAD)
Comfort Noise Generation (CNG)
Echo Cancellation
Fax and Modem Transport
Fax Relay and Bypass
Modem Bypass
Signaling
In-band/Out-of-band Signaling
(DTMF & Tone
Detection/Generation)
CAS Relay
SS7
SigTran
User's Manual
Table 10-1: Selected Technical Specifications
Characteristic
G.711 PCM, 64 kbps (µ-law/A-law)
G.726/G.727 ADPCM/E-ADPCM (16 to 40 kbps)
G.723.1 MP-MLQ, 6.3 kbps ACELP, 5.3 kbps
G.729A CS-ACELP, 8.0 kbps
G.729 and G.723 should not be used simultaneously on the
same board when using cellular coder templates
G.723.1 Annex A
G.729 Annex B
PCM and ADPCM – Per RFC 3389 or Proprietary
G.165 & G.168-2000 compliant 32, 64, 128 msec echo tail
(64 and 128 may reduce channel capacity)
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 to G.711 or ADPCM
Automatic switching to PCM or ADPCM for modem signals (V.34
or V.90 modem detection)
DTMF per TIA 464B
DTMF over RTP per RFC 2833
MFC-R2
Packet side or PSTN side generation/detection of DTMF and
User Defined Call Progress Tones (PSTN, IP) & Country Test
Tones (per ITU-t Q.724)
ABCD signaling over RTP per RFC 2833
MTP-2 and MTP-3 (ITU/ANSI/China) link termination
IUA (RFC 3057) over SCTP (RFC 2960)
M2UA, (RFC 3331) over SCTP (RFC 2960)
transferring MTP-2 payload
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MG 3200
Document # LTRT-72704