Nortel Networks TP-1610 SIP Capacity with E1, Capacity with T1, Voice Compression, Dtmf Detection

Mediant 2000 SIP User’s Manual 12. Selected Technical Specifications

12 Selected Technical Specifications

Table 12-1: Mediant 2000 Selected Technical Specifications (continues on pages 183 to 185)

Function	Specification
Trunk & Channel Capacity1
Capacity with E1	1, 2, 4, 8 or 16 E1 spans, 30, 60, 120, 240 or 480 digital channels
Capacity with T1	1, 2, 4, 8 or 16 T1 spans, 24, 48, 96, 192 or 384 digital channels
Voice & Tone Characteristics
Voice Compression	G.711 PCM at 64 kbps µ-law/A-law	(10, 20, 30, 40, 50, 60, 80, 100,120 msec)
	G.723.1 MP-MLQ at 5.3 or 6.3 kbps	(30, 60, 90, 120 msec)
	G.726 at 32 kbps ADPCM	(10, 20, 30, 40, 50, 60, 80, 100,120 msec)
	G.729 CS-ACELP 8 Kbps Annex A / B	(10, 20, 30, 40, 50, 60, 80, 100 msec)
	NetCoder at 6.4, 7.2, 8.0 and 8.8 kbps	(20, 40, 60, 80, 100, 120 msec).
	EVRC	(20, 40, 60, 80, 100 msec).
	AMR	(20 msec only)
	Transparent	(20, 40, 60, 80, 100, 120 msec)
Silence Suppression	G.723.1 Annex A
	G.729 Annex B
	PCM and ADPCM: Standard Silence Descriptor (SID) with Proprietary Voice Activity
	Detection (VAD) and Comfort Noise Generation (CNG)
	NetCoder
Packet Loss Concealment	G.711 appendix 1
	G.723.1
	G.729 a/b
Echo Cancellation	G.165 and G.168 2000, configurable tail length per gateway from 32 to 128 msec
DTMF Detection and	Dynamic range 0 to -25 dBm compliant with TIA 464B and Bellcore TR-NWT-000506.
Generation
DTMF Transport (in-band)	Mute, transfer in RTP payload or relay in compliance with RFC 2833
Call Progress Tone	16 tones: single tone or dual tones, programmable frequency & amplitude; 15
Detection and Generation	frequencies in the range 300 to 1980 Hz, 1 or 2 cadences per tone, up to 2 sets of
	ON/OFF periods.
Output Gain Control	-32 dB to +31 dB in steps of 1 dB
Input Gain Control	-32 dB to +31 dB in steps of 1 dB
Fax and Modem Transport Modes
Real time Fax Relay	Group 3 real-time fax relay up to 14400 bps with auto fallback
	Tolerant network delay (up to 9 seconds round trip delay)
	T.30 (PSTN) and T.38 (IP) compliant (real-time fax)
	CNG tone detection & Relay per T.38
	Answer tone (CED or AnsAm) detection & Relay per T.38

1Capacity Limitations:

•When the Echo Canceller’s length is set to 64 msec or more, the number of available gateway channels is reduced by a factor of 5/6. For detailed information refer to the parameter ‘MaxEchoCancellerLength’ (Table 6-1).

•When DSP template version 1 (for AMR coder) is selected, the maximum number of channels is 160 instead of 240 (rounded to full E1/T1 trunk capacity 30/24 channels per trunk).

•When DSP template version 2 (for EVRC coder) is selected, the maximum number of channels is 120 instead of 240 (rounded to full E1/T1 trunk capacity 30/24 channels per trunk).

Version 4.4 183 July 2005