Telos ZephyrExpress user manual Remote Control jacks, Line C Top pin

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IMPORTANT!

North American ISDN connections are unterminated and not protected from line surges. These surges Ñ from lightning and other causes ÑÊcan damage electronic equipment, including ZephyrExpressÕ U interface.

Telephone-line protectors are available from electronics and computer stores. ItÕs your responsibility to ensure that adequate protection is provided.

Only the two center conductors (red, green) of the ISDN jack are used with a U interface. If your phone company provided an 8-conductor RJ-45 jack, you can insert a standard RJ-11 or RJ-14 telephone line cord and it will properly center itself to connect to those conductors.

U Interface Pinouts

PIN FUNCTION

1N/C

2N/C

3Line

4Line

5N/C

6N/C (Top pin)

Line Direct LED

This LED indicates the state of ZephyrExpress’ internal NT1. It blinks rapidly when the built-in NT1 is first initializing the ISDN line, or if there is no ISDN line connected. It blinks slowly when contact is made with the central office. It will light steadily when all handshaking is complete and the basic line connection is good.

The LED is not supplied on units shipped outside of North America.

Remote Control jacks

ZephyrExpress has two computer-style jacks on the back panel. A DB-9 is used for serial RS-232 communication with the system, and a DB-15 is used for parallel contact closures and logic-level inputs.

RS-232

The RS-232port is used for:

∙remote control of ZephyrExpress menus from a modem or personal computer

∙downloading new ZephyrExpress software.

Complete instructions and the remote control command language appear in section 6.

The port accepts a male DB-9 and matches the format found on personal computers. The default line protocol is 8 bits, 1 Stop Bit, No Parity, 9600 bps. You can change the baud rate for remote control or downloads from the System menu.

ZEPHYREXPRESS HARDWARE 3-13