Appendices
Appendix A: Specifications
Dimensions (LxDxH) | Echo Cancellation: 120ms tail time |
17.25" x 10.25" x 1.75" | (works with 12dB of room gain) |
43.8 x 26 x 4.5 cm | Phantom Power: 24V, selectable |
Telco Line
POTS (plain old telephone service) line or analog extension from PBX
Weight
7 lb/3.18 kg dry
12 lb/5.4 kg shipping
Operating Temperature
32 to 100° F/0 to 38° C
Humidity
15% to 80%,
Power Input Range
Power Consumption
30W typical
RS-232
9,600 (default)/19,200/38,400 baud rate
8 bits, 1 stop, no parity
Hardware flow control on (default)/off
Control/Status
Inputs: active low (pull to ground)
Outputs: open collector, 40VDC max, 40mA each
+5V pins (2), 300mA each
Mic/Line Input
Impedance: 5kΩ
Nominal Level: adjustable
Maximum Level:
AUX In
bridging Impedance: 20kΩ
Nominal Level: 0dBu
Maximum Level: 19dBu
4 Wire/Video Codec In
Impedance: 20kΩ
Nominal Level: 0dBu
Maximum Level: 19dBu
Line Output
Impedance: 50Ω
Nominal Level: 0dBu
Maximum Level: 19dBu
AUX Output
Impedance: 50Ω
Nominal Level: 0dBu
Maximum Level: 19dBu
4 Wire/Video Codec Out
Impedance: 50Ω
Nominal Level: 0dBm
Maximum Level: 19dBu
Speaker Output
Binding post; 5W max into 4Ω
Telco Set
Connect analog telephone set
Audio Performance Conditions
Unless otherwise specified, all measure- ments are performed with a 22Hz to 22kHz BW limit (no weighting).
Frequency Response: 20Hz to 15kHz ±2dB
Noise (EIN):
THD+N: <0.1%
SNR: 65dB re 0dBu
Dynamic Range: 85dB
Telco Audio Performance
Frequency Response: 250Hz to 3.3kHz ±2dB (AGC disabled)
SNR: >60dB re
THD+N: <0.2%, 250Hz to 3.3kHz (AGC disabled)
TEC tail time: 31ms
TEC null: 55dB nominal
Approvals
FCC, ASA, CE
