Key facts
- Brand
- Teridian
- Model
- 73M1866B
- Industry
- Industrial
- Documents
- 4
- Languages
- ZH · EN
- Last added
- 2012-04-11
Start here
Teridian 73M1866B/73M1966B FXOAPI User Guide
This guide provides a detailed description of the FXOAPI used with the Teridian M1x66 reference driver. It explains how an application written in C can initialize the API, open devices and channels, configure PCM parameters, and handle asynchronous FXO events through callbacks.
The document lists all available APIs, their prototypes, and usage examples, covering initialization, device/channel management, PCM configuration, hook switching, pulse dialing, GPIO control, loopback, country parameters, billing‑tone filtering, register access, interval‑event tables, current/voltage measurement, and miscellaneous channel settings. Sample code and related documentation references are also included.
Teridian 73M1866B specifications
| Connector type | 20‑pin header connector |
|---|---|
| Power supply voltage | 3.3 V |
| Audio monitor output | Pin 10 |
| Recommended wire gauge | 30 AWG |
| Maximum wire length | 8 inches (20 cm) |
| PSTN line current | 20‑100 mA (typical 40 mA) |
All Teridian 73M1866B documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What type of connector does the board use?
The board uses a 20‑pin header connector for all digital signals and power connections.
How many power pins are on the connector?
There are two power pins on the connector, pins 2 and 4.
What is the isolation barrier frequency of the 73M1x66B devices?
The isolation barrier operates at a frequency of 768 kHz.
How much analog gain can be added to the transmit path?
Up to an additional +6 dB of analog gain can be applied to the transmit path.
How do I install the GUI software?
Load the GUI from the CD, run Teridian_73M1966_1_3_SETUP.EXE, and follow the on‑screen prompts to complete the installation.
How do I write register values using the GUI?
Press the Write Red button to write all values that are highlighted in red; they will turn black after being written.