Tech Notes
ADTRAN Terminal Equipment
Some Comrex digital codecs requires external devices to connect to various types of digital circuits. Adtran is a major manufacturer of a wide range of ISDN Terminal Adapters and Switched 56, DDS, and T1 DSU/CSUs. These Adtran products are carried by most Comrex dealers. Cables to connect to these Adtran products are available through Comrex. See Document #226 for pinout information.
| Product Name | Comment |
|---|---|
| ADTRAN ISU128 | TA with NT1 and Bonding - for Basic Rate Interface ISDN |
| ADTRAN 2x64 | Dual port version of ISU 128 - for Basic Rate Interface ISDN |
| ADTRAN ISU512 | 3 BRI ISDN TA with NT1 and Bonding - to provide data rates up to 384 kb/s on three BRI ISDN lines. |
| ADTRAN Express 3000 | Connects to an ISDN Line and provides two connections for analog devices (such as a telephone, fax POTS codec, etc.) |
| DSU 56/64* | 56 kb/s DDS DSU/CSU - for dedicated digital service at 56 or 64 kb/s |
| DSU III AR* | DDS or 4-wire SW56 DSU/CSU - for 4-wire switched 56 |
| DSU III S2W* | 2 wire SW56 DSU/CSU - for 2-wire switched 56 |
| TSU* | Single port T1 CSU/DSU - a basic T1 interface |
| TSU 100 | Single port T1 interface with expansion capability up to 4 additional ports |
| TSU 600 | 6 slot version of the TSU 100 |
* Requires optional Comrex DB-25 to V.35 connecting cable to connect to Comrex DXR.1, DXP.1, Envoy and Nexus.
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