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Mediant 2000 SIP User's Manual
12
Selected Technical Specifications
Table 12-1: Mediant 2000 Selected Technical Specifications (continues on pages 183 to 185)
Function
Trunk & Channel Capacity
Capacity with E1
Capacity with T1
Voice & Tone Characteristics
Voice Compression
Silence Suppression
Packet Loss Concealment
Echo Cancellation
DTMF Detection and
Generation
DTMF Transport (in-band)
Call Progress Tone
Detection and Generation
Output Gain Control
Input Gain Control
Fax and Modem Transport Modes
Real time Fax Relay
1
Capacity 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'
•
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
1
1, 2, 4, 8 or 16 E1 spans, 30, 60, 120, 240 or 480 digital channels
1, 2, 4, 8 or 16 T1 spans, 24, 48, 96, 192 or 384 digital channels
G.711 PCM at 64 kbps µ-law/A-law
G.723.1 MP-MLQ at 5.3 or 6.3 kbps
G.726 at 32 kbps ADPCM
G.729 CS-ACELP 8 Kbps Annex A / B
NetCoder at 6.4, 7.2, 8.0 and 8.8 kbps
EVRC
AMR
Transparent
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
G.711 appendix 1
G.723.1
G.729 a/b
G.165 and G.168 2000, configurable tail length per gateway from 32 to 128 msec
Dynamic range 0 to -25 dBm compliant with TIA 464B and Bellcore TR-NWT-000506.
Mute, transfer in RTP payload or relay in compliance with RFC 2833
16 tones: single tone or dual tones, programmable frequency & amplitude; 15
frequencies in the range 300 to 1980 Hz, 1 or 2 cadences per tone, up to 2 sets of
ON/OFF periods.
-32 dB to +31 dB in steps of 1 dB
-32 dB to +31 dB in steps of 1 dB
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
12. Selected Technical Specifications
Specification
(10, 20, 30, 40, 50, 60, 80, 100,120 msec)
(30, 60, 90, 120 msec)
(10, 20, 30, 40, 50, 60, 80, 100,120 msec)
(10, 20, 30, 40, 50, 60, 80, 100 msec)
(20, 40, 60, 80, 100, 120 msec).
(20, 40, 60, 80, 100 msec).
(20 msec only)
(20, 40, 60, 80, 100, 120 msec)
183
(Table
6-1).
July 2005
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