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The TN556 has 12 ports connecting to ISDN-BRI terminals. Each port has TXT, TXR, PXT, and PXR signal leads. Up to eight ports can be used for ASAI links. Each port operates at 192 kbps per second and has two B-channels and one D-channel (not used to carry data). The TN556 requires a packet control circuit pack (TN778) in G3s and G3i. The TN556 has a range of up to 3,300 feet maximum from the PBX to the voice terminal (using 22 AWG wire) and uses standard protocol ANSI T1.605. The TN556 also has multipoint support, allowing 24 terminals to be connected, where each terminal uses one B-channel and shares the D-channel. In multi-support connectivity, two voice terminals, one voice terminal and one data terminal, or two data terminals can be connected to each port. The TN556 ISDN-BRI Line circuit pack supports A-Law or Mu-Law companding.
- Availability:
- 0
- Features:
- Provides 12-Ports connecting to ISDN-BRI terminals
Shipping
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SHIPPING OPTIONS
| Service | Delivered By | Transit Time | Cost |
|---|---|---|---|
| FedEx Ground FREE (Free Ground shipping on orders over $75.) |
Varies | 1–5 Business Days | FREE |
| FedEx Ground | Varies | 1–5 Business Days | $15.00 |
| FedEx Express Saver | 4:30 p.m. | 3 Business Days | $28.00 |
| FedEx 2 Days | 4:30 p.m. | 2 Business Days | $38.00 |
| FedEx Standard Overnight | 3:00 p.m. | Overnight | $48.00 |
| FedEx Priority Overnight | 10:00 a.m. | Overnight | $68.00 |
FEDEX GROUND SHIPPING MAP
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