User's Manual
Table Of Contents
- 1. Getting started
- 2. Introduction
- 3. Preparation
- 4. About the terminal
- 5. Mounting and installing the terminal
- 6. Connecting to the terminal
- 7. Managing the terminal
- 8. Configuring the terminal
- 9. Configuring the traffic interfaces
- 10. Cross Connections
- Embedded cross connect switch
- The Cross Connections application
- The Cross Connections system requirements
- Installing the Cross Connections application
- Opening the Cross Connections application
- The Cross Connections page
- Setting the terminal's address
- Management and user ethernet capacity
- Setting card types
- Getting cross connection configuration from the terminals
- Creating cross connections
- Sending cross connection configuration to the terminals
- Saving cross connection configurations
- Using existing cross connection configurations
- Printing the cross connection configuration
- Deleting cross connections
- Configuring the traffic cross connections
- Cross connection example
- Symmetrical Connection Wizard
- 11. Protected terminals
- 12. In-service commissioning
- What you will need
- Checking the antenna polarization
- Visually aligning antennas
- Accurately aligning the antennas
- Synchronizing the terminals
- Checking performance
- Checking the receive input level
- Checking the fade margin
- Checking long-term BER
- Bit Error Rate tests
- Additional tests
- Checking the link performance
- Viewing a summary of the link performance
- What you will need
- 13. Maintenance
- 14. Troubleshooting
- 15. Interface connections
- 16. Alarm types and sources
- 17. Country specific settings
- 18. Specifications
- Ethernet interface
- QJET Quad E1 / T1 interface
- Q4EM Quad 4 wire E&M interface
- DFXO Dual foreign exchange office interface
- DFXS Dual foreign exchange subscriber interface
- QV24 Quad V.24 asynchronous data interface
- HSS Single high speed synchronous data interface
- External alarm interfaces
- Auxiliary interfaces
- AC Power supply
- DC Power supply
- Power consumption
- MHSB protection
- Ethernet interface
- 19. Product end of life
- 20. Abbreviations
- 21. Acknowledgments and licensing
- 22. Commissioning Forms
- 23. Index
Specifications | 248
DFXS Dual foreign exchange subscriber interface
General
Audio 64 kbit/s (PCM as per ITU G.711)
32, 24 and 16 kbit/s (ADPCM as per ITU G.726 and ANSI
TI.303)
Signalling Allocation 8-32 kbit/s allocated for CAS
Compression coding A-Law or µ-Law
Maximum line length 600 metres (2000 feet) on 0.4 mm / 26 AWG copper pair
Calling line ID (CLI) Support provided for ETSI: EN 300 659-1 & 2 and BT: SIN
227 and 242
Fax Conforms to G3 standard for 64 kbit/s PCM and 32 kbit/s
ADPCM compression
Analogue
Transmission performance
characteristics
ITU G.712 E2 for an operating level range of -6 dBr to +2.5
dBr
Input level range -9.0 dBr to +3.0 dBr in 0.5 dB steps
Output level range -9.5 dBr to +2.5 dBr in 0.5 dB steps
Default Input level +1.0 dBr
Default Output level -6.0 dBr
Maximum level +3.14 dBm0
Line impedance / Hybrid
balance impedance options
600 Ω
900 Ω
600 Ω + 2.16 µF
900 Ω + 2.16 µF
220 Ω + (820 Ω || 120 nF) (TN12)
270 Ω + (750 Ω || 150 nF) (TBR21)
370 Ω + (620 Ω || 310 nF) (BT3)
Return Loss better than 20 dB over the frequency range 200 - 3600 Hz
Trans hybrid loss better than 30 dB between 300 - 3400 Hz (with matched
external line and hybrid balance impedance)
Common mode rejection ratio better than 40 dB over the frequency range 50 - 3600 Hz