Telos ZephyrExpress user manual Hot Tip

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HOT TIP:

Create an Autodial that calls a Master Setup youÕve created for a specific remote venue. Then go to the Utility: Safe Mode menu and block everything except Autodialing.

The remote operator can then just press the DIAL button for (virtually) foolproof remotes.

ISDN connections

7:How do I connect ZephyrExpress to an ISDN circuit?

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There are two telephone jacks on the left side of the rear panel. Only one of them should be connected to the ISDN line.

The upper jack is an S/T interface, for lines that have an NT1 terminator (frequently supplied by phone companies in Europe). Use the supplied 8-conductor cable, or a 10Base-T (“Category 5”) cable, to the NT1. This jack also provides power to the terminator.

NOTE:

ZephyrExpress sold in North America provide power for an external NT1. If youÕre using one of these, disconnect any other power supply connected to the NT1. If both ZephyrExpress and the NT1 are providing power, both will be damaged.

You can tell if a ZephyrExpress will supply power by looking at the ISDN connections: if there are two telephone jacks, itÕs a North American unit and you must follow the above precaution. If thereÕs only one telephone jack, itÕs a European unit and can be connected safely to powered NT1s.

European units are also marked with a Euro Telecom logo on the rear panel.

The lower telephone jack on a North American ZephyrExpress is a U interface marked LINE DIRECT. This is designed for direct connection to the unterminated lines supplied by American telephone companies. This jack uses ZephyrExpress’ internal NT1. The phone company may have supplied an 8-pin jack (RJ-45) or a standard four-conductor jack (RJ- 14 or RJ-11); you can plug a standard telephone line cord into either jack and it will work properly. If the phone company has supplied screw terminals or bare wires, use a modular cord with spade lugs, available from electronics stores, and connect to red and green.

The green LED below the LINE DIRECT label will blink rapidly when first contacting the central office, and then blink slowly while handshaking is going on. When the connection is complete, the LED will light steadily. If this doesn’t appear to be happening, see section 9 of this manual for troubleshooting tips.

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