Installation guide

__________________________________________________________________________________________________
Operator Manual for Office Extender G/95072 Issue 8 Page 11
__________________________________________________________________________________________________
SPECIFICATIONS
Amplifier
Frequency Range 300 Hz to 3.4 kHz (-3dB).
Input - Output Impedance 220 ohm + 120 nF // 820 ohm (complex).
Return Loss > 17 dB, 300 Hz to 3400 Hz.
Insertion Gain 20 dB +/- 2 dB maximum.
Output Level -10 dBm → 0 dBm programmable.
Noise < -50 dBm unweighted, 300 Hz to 3.4 kHz.
Method of operation Software controlled AGC with noise discrimination.
Control Logic
Processor Motorola 6809.
Random Access Memory 8K static.
Program Memory 32K byte EPROM.
Interface 8 bit latched data.
Number, Status & Option Storage Electrically Erasable Programmable Read Only Memory (EEPROM).
Dialling Pulse (Decadic) - Electronic, controlled by processor.
10 pps. 34/66 Mark/Space ratio.
Tone (DTMF) -Electronic, controlled by processor.
70 ms on, 70 ms off.
Number Storage 1 → 8 phone numbers of up to 20 digits each (local, STD or IDD
calls), programmable from Keypad or remotely by telephone.
Displays Single digit 14mm 7 segment LED.
Power On LED (Red).
Divert On LED (Green).
Controls 12 button keyboard.
Voice Announcements
Voice Prompts and Announcements
Storage medium EPROM.
Recording method 28K bit/sec ADPCM.
Personalised Voice Announcements (Optional)
Storage medium Linear EEPROM.
Recording method Analogue DAST, time sampled at 8 kHz.
Record time Up to 16 seconds x 2.
Detectors
Activity detector
Sensitivity Software adjustable.
DTMF detector
Sensitivity > -40 dB.
Detect time > 50 ms.
Dial Tone detector
Frequency range 380 Hz - 550 Hz.
Sensitivity > 50 mV.