Attachment No. 1
| Technical matters | Single channel | Digital MAS | Radio multiplex | Optical | Satellite | WLL system (TDMA-WLL) |
|---|---|---|---|---|---|---|
| 1. Service area | 30-50 km |
20-30 km |
10-50 km | 30-50 km | Up to 12700 km | 30-50 km |
| 2. Kind of service | Tel, Fax | Tel, Fax, Data | Tel, Fax, Data | Tel, Fax, Data | Tel, Fax, Data | Tel, Fax, Data |
| 3. Quality of Communication | 30-40 dB | 1E-6 | 1E-9 | 1E-9 | 1E-6 | |
| 4. Capacity | 1 ch | 2-4 Mb/s 128-512 sub |
2-34 Mb/s | 2-34 Mb/s 30-480 sub |
355 ch (VSAT) |
23-71 (47-143) ch 200-1000 sub |
| 5. Frequency Band | 80, 150, 400, 800 MHz | 1.5, 2.0, 2.5 GHz | UHF/SHF | 6/4 GHz 14/11 GHz |
800/900 MHz 1.8/1.9 GHz |
|
| 6. Interface to Exchange | Sub, 2W | Sub 2W or 2Mb/s | 2 Mb/s or Sub.2 wire |
2/4 W sub | ISDN (Pri) E1/R2, V5.2 2W |