
Voice Trunking Gatewa
Vmu
-110
VOICE PORTS
Vmux-110 is available with a choice of single
E1 or T1 voice port, or 4/8 FXS, FXO, or E&M
analog voice ports.
• Compression Algorithms
G.723.1 (5.3 or 6.4 kbps), G.729A
(8 kbps), G.711
• Silence Suppression
G.723.1A, G.729B
• Echo Cancellation
32 msec per channel as per G.168
• Fax Relay
Group III: 4.8, 9.6, 14.4 kbps
• Voice Band Data
Transparent support for modems
• Signaling Support
Transparent CAS, including R2
and E&M
Transparent CCS, including
ISDN, QSIG and SS7
Clear channel
• MF Signaling Support
DTMF, MFR2, MFC detection,
generation and relay
E1 Digital Voice Port
• Number of Channels Supported
According to ordering:
Up to 6, 12, 18, 24 or 30
• Nominal Data Rate
2.048 Mbps
• Standards
ITU-T Rec. G.703, G.704, G.706,
G.732, G.823
• Framing
G.732N or G.732S, with or
without CRC-4
• Line Code
HDB3
• Receive Signal Level
With LTU: 0 to -43 dB
Without LTU: 0 to -12 dB
• Transmit Signal Level
Balanced: ±3V (±10%)
• Timing
Internal or loopback
• Jitter Performance
Per ITU-T G.823
• Line Type
Balanced: 4-wire, 120Ω
• Connector
RJ-45 for balanced interface
Note: CBL-RJ45/2BNC/E1 adapter is
available for converting the balanced
E1 port RJ-45 connector into a pair of
BNC connectors for unbalanced coax
interface (see Ordering).
T1 Digital Voice Port
• Number of Channels Supported
According to ordering:
Up to 6, 12, 18 or 24
• Nominal Data Rate
1.544 Mbps
• Standards
ANSI T1.403, AT&T TR-62411,
ITU-T Rec. G.703
• Framing
SF, ESF
• Line Code
AMI
• Zero Suppression
B8ZS
• Timing
Internal or loopback
• Receive Signal Level
With CSU: 0 to -36 dB
Without CSU: 0 to -30 dB
• Transmit Signal Level
With CSU: 0, -7.5, -15, or -22.5 dB
Without CSU: ±2.7V (±10%) at
0-655 ft
• Jitter Performance
Per AT&T TR-62411
• Line Type
Balanced 4-wire, 100Ω
• Connector
RJ-45
FXS Analog Voice Ports
• Number of Ports
4 or 8
• Analog Parameters
ITU-T standards: G.713, 2-wire
for voice and signaling.
Nominal level: 0 dBm
Nominal impedance: 600Ω
Return loss (300 to 3400 Hz):
better than 20 dB
Frequency response (Ref: 1020 Hz):
300 to 3000 Hz: ±0.5 dB
250 to 3400 Hz: ±1.1 dB
Level adjustment, soft selectable:
TX: +5 dBm to -4 dBm
RX: +5 dBm to -10 dBm
Steps: 1 dB (±0.1 dB), nominal
Signal to total distortion, G.712,
G.713 method 2:
0 to -30 dBm0: better than 33 dB
+3 to -45 dBm0: better than 22 dB
Idle channel noise: better than
-70 dBm0 (+20 dBrnc)
• Signaling
EIA RS-464 Loop-Start
On-Hook/Off-Hook Threshold:
3V to 24V between Tip and Ring
at off-hook state
Higher than 25V between Tip
and Ring at on-hook state
Feed Current:
24 mA ±10%
Ringer:
Voltage: 50 VRMS (±10%),
overload protected
Frequency: 25 Hz (±10%)
Cadence: 1 sec ON/3 sec OFF
(default), user-configurable
• Connectors
4-port version: RJ-12per channel
8-port version: DB-25 connector
convertible to 8 x RJ-12
connectors via adaptor cable (see
Ordering)
FXO Analog Voice Ports
• Number of Ports
4 or 8
• Analog Parameters
ITU-T standards: G.713, 2-wire
for voice and signaling
Nominal level: 0 dBm
Nominal impedance: 600Ω
Return loss (300 to 3400 Hz):
better than 20 dB
Frequency response (Ref: 1020 Hz):
300 to 3000 Hz: ±0.5 dB
250 to 3400 Hz: ±1.1 dB
Level adjustment, soft selectable:
TX: +5 dBm to -4 dBm
RX: +2 dBm to -17 dBm
Steps: 1 dB (±0.1 dB), nominal
Signal to total distortion, G.712,
G.713 method 2:
0 to -30 dBm0: better than 33 dB
+3 to -45 dBm0: better than 22 dB
Idle channel noise: better than
-70 dBm0 (+20 dBrnc)
Kommentare zu diesen Handbüchern