3Com VCX v7111 User Manual page 388

FXO Capabilities
Does not apply to the
V7111 12 PORT
Additional Features
Polarity Reversal / Wink
Metering Tones
Distinctive
Ringing
Message Waiting
Indication
Voice & Tone Characteristics
Voice Compression
Silence Suppression
Packet Loss Concealment
Echo Canceler
Gain Control
DTMF Transport (in-band) Mute, transfer in RTP payload or relay in compliance with RFC 2833
DTMF Detection and
Generation
Call Progress Tone
Detection and Generation
Output Gain Control
388
Short or Long Haul.
Includes lightning and high voltage protection for outdoor operation.
Programmable Line Characteristics:
AC impedance matching, hybrid balance, Tx & Rx frequency response, Tx & Rx
Gains, ring detection threshold, DC characteristics.
For country-specific coefficients use the parameter
CountryCoefficients.
Caller ID detection:
Bellcore GR-30-CORE Type 1 using Bell 202 FSK modulation, ETSI Type 1,
NTT, Denmark, India, Brazil, British and DTMF ETSI CID (ETS 300-659-1).
Immediate or smooth to prevent erroneous ringing
12/16 KHz sinusoidal bursts
By frequency (15-100 Hz) and cadence patterns
DC voltage generation (TIA/EIA-464-B), V23 FSK data, Stutter dial tone and
DTMF based.
G.711 PCM at 64 kbps µ-law/A-law
120 msec)
G.723.1 V7111-MLQ at 5.3 or 6.3 kbps
G.726 at 32 kbps ADPCM
120 msec)
G.729 CS-ACELP 8 Kbps Annex A / B
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).
G.711 appendix 1
G.723.1
G.729 a/b
G.165 and G.168 2000, 64 msec
Programmable
Dynamic range 0 to -25 dBm, compliant with TIA 464B and Bellcore TR-NWT-
000506.
32 tones: single tone, dual tones or AM tones, programmable frequency &
amplitude; 64 frequencies in the range 300 to 1980 Hz, 1 to 4 cadences per
tone, up to 4 sets of ON/OFF periods.
-32 dB to +31 dB in steps of 1 dB
(10, 20, 30, 40, 50, 60, 80, 100,
(10, 20, 30, 40, 50, 60, 80, 100,
(10, 20, 30, 40, 50, 60 msec)
®
3Com VCX V7111 VoIP Gateway User Guide
(30, 60, 90 msec)