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| Control and
compression unit with a network interface |
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Network Interface
- Rate: 2048êbit/s ITU-T G.703; G.704; G.706
- Code: HDB3; AMI
- Coding mode: ADPCM Processing 32kbit/s
- Number of interfaces: 1
- Impedance: 120 ohm symmetric and 75 ohm asymmetric
- Management interface: external RS.232
- Detection of basic alarms
- Additional timeslot Nx64 functionalities:
- Test signal generation - digital sine and PRBS 215-1 types
- Measurement of bit error rate
- Different timeslot loops
Synchronization
- Internal synchronization
- External source of clock signal: 64kHz, 2048kHz, ITU-T G.703
- Tributary signal 60 timeslots of 2Mbit/s
- Clock synchronization output: 2048 Kbit/s - ITU-T G.703
Parameters
of the digital compression
- Type of compression: ADPCM Processing from 64 kbit/s to 32 kbit/s
- Input/Output level: 0dBmO±0,25dB
- Frequency-amplitude characteristic: ≤ ± 0,5dB
- Signal Distortion: ≤ ± 5 mS
- Group delay signals with frequency band from 300Hz to 3400Hz:< 100 µS
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