iv Introduction
Blank Screen?
If ZephyrExpress’ LEDs light when you first apply power but the LCD screen
appears dark, or the LCD screen lights but no characters appear, the last user
may have left its brightness or contrast at an extreme setting. To reset:
p
d

• Press the DROP button and hold that button in while turning the Edit

knob clockwise to reset the backlighting. It may take a few turns.

• Press the DIAL button and hold that button in while turning the Edit

knob either direction to change the LCD Contrast.

Test Lines
Telos Systems maintains ISDN test lines with continuously-playing music. Feel
free to dial into them from your ZephyrExpress to test your setup or line.
· USA: +216 781.9310, +216 781.9311 (Layer 3 Dual transmit @ 32 kHz sample
rate. Dial just one number to test Layer 3 Mono, or dial both numbers to test
Layer 3 Dual. You can also test Layer 3 Stereo by dialing both numbers; a
slight distortion of the stereo image may result because you’re receiving our
Dual test signal rather than true stereo. Your ZephyrExpress will work
correctly with a stereo transmission.)
· Germany: (49) 81 61 42 061 (Layer 3 Dual transmit @ 32 kHz sample rate; dial
once to test Layer 3 Mono, or dial twice to test Layer 3 Dual. The warning
about Layer 3 Stereo, above, applies.)
· Germany: (49) 81 61 42 062 (Layer 2 Mono @ 48 kHz; ZephyrExpress must be
set to Layer 2 receive. Only one line is required.)
hHOT TIP:

ZephyrExpress will dial a test line for you:

1) Verify that the word Ready appears twice on the LCD screen. If it doesn’t, you
have an ISDN problem and can’t place a call. ISDN setup instructions appear in
this booklet.
2) Press the DIAL button
3) Turn the EDIT knob to select Auto... and tap the EDIT knob in toward the
panel to confirm that choice
4) Turn the EDIT knob to select a test line and tap the knob again
5) The word Go! will be highlighted on the screen. Tap the knob one more time,
and ZephyrExpress will place the call.