
Networking Features
Memotec Inc.
7-3
7.2 Voice Channels
•
Voice compression algorithms
: ACELP-CN (8K/6K), G.729/G.729A (8K), G.711
(PCM 64K), G.723 (low 5.3K/high 6.4K), G.726 (ADPCM 16K/24K/30K/40K)
•
Dialing
: Multi-Frequency (MF), Dual Tone Multi-Frequency (DTMF) or Pulse
•
Line activation
: dedicated or switched
•
Fallback
: buffering scheme for packetization of DSP packets:
•
Signaling
: E&M 4w/2w (Type I, II and V) Immediate Start, Wink Start; Loop
Start and Ground Start FXS (OPX) and FXO (SLT), ISDN-BRI, ISDN-PRI,
QSIG, custom signaling; software configurable
•
Voice/fax line impedance
: 600/900 ohms or complex
•
Echo cancellation
: CCITT G.165
•
Fax Relay
: Group III FAX 4.8, 7.2, 9.6, 12.0, 14.4 Kbps, over PowerCell. Super
G3 configurable to passthrough or fallback to G3. Group IV fax and other non-
voice bearer ISDN channel at 64K
•
Fax signal types
: V.21 channel 2, V27ter 2400 bps, V27ter 4800 bps, V29 7200
bps, V29 9600 bps, V33 12000bps, V33 14400bps, V17 7200bps, V17 9600bps,
V17 12000bps, V17 14400bps
•
Modem Relay
: V.32bis demodulation up to 14.4 Kbps, modem passthrough
(G.711) for other modem types
•
Encoding
: Mu-law or A-law
Compression
Packetization
Fallback (Buffering)
ACELP-CN
8K and 6K
(configurable)
up to 5
G.723
6.4K and 5.3K
(configurable)
up to 3
G.726 16K
16K
none
G.726 24K
24K
none
G.726 32K
32K
none
G.726 40K
40K
none
G.729, G.729A
8K
up to 8
PCM64K
64K
up to 2
Table 7-1: Packetization of DSP packets
Содержание NetPerformer SDM-9220 Series
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