ZEPHYR FAQs

Q: Do I need to be careful what I plug into my Zephyr's audio jacks?
A: Yes, be sure not to plug any input or output from any Zephyr into a
microphone or intercom circuit connected to a live DC phantom power
source. The input or output circuitry of the Zephyr could be damaged.

Q: In what format should the SPID numbers be entered into my
Zephyr/Xstream?
A: The most common SPID format for ISDN lines using the Nat'lI-1 protocol
is the area code followed but the 7-digit phone number followed by a
4-digit SPID suffix. For example: 21678193100101 where "216" is the area
code, "7819310" is the phone number and "0101" is the SPID suffix.
Sometimes the telco will only provide 2 digits for the SPID suffix such as
"01". In this case go ahead and add the second "01" to make it "0101". If
you still are having problems getting the Zephyr to Ready / Ready please
contact Telos Customer Support.

Q: Do I need to enter the MSN/DN numbers below the SPID numbers in my
Zephyr Xstream?
A: Yes. The (silver) Zephyr Xstream uses a different ISDN stack then the
original (black) Zephyr. The Zephyr Xstream requires both the SPID numbers
and the DN (directory numbers) to be entered. These directory numbers are
normally just the 7-digit phone numbers that can be extracted from the
SPID numbers. For example the DN for this SPID "21678193100101" would be
"7819310". Please note that the Zephyr Xstream will need to be rebooted
whenever changes to the SPID or DN numbers have been made.

Q: What does it mean when my little green LED on the ISDN NT-1 card is
blinking?
A: That means either no ISDN line connected, or the line is not
functioning properly. With no line connected, the LED should flash evenly
about 5 times per second. When a good ISDN line plugged in to the "U"
port, the LED should revert to a steady "on" condition.

Q: What does "SPID Pending" mean?
A: SPID Pending appears on the TEL menu as the Zephyr attempts to
connect to the ISDN line, and is searching for the line's SPID number to
match the SPID number entered into the TEL menu.

Q: What does "Cause xx" mean when I attempt to make an ISDN connection,
and fail?
A: There are many reasons an ISDN call may not connect properly. Often,
the telephone company sends back an error code which the Zephyr interprets
as a "Cause". A complete listing of the Cause codes is contained in the
Zephyr manual, and also on line at the Telos website.

Q: Why does my Classic Zephyr not retain my SPID's and Auto-Dial
information when I turn it off?
A: Its likely the internal battery has run down. Average internal
battery life is 5 to 7 years.
Contact us if you need to purchase one, we sell them for $20.

Q: The green LED on the NT-1 card is dark (not lit), Why?
A: Something has damaged the ISDN card line input circuitry. Usual
causes for this are close lightning strikes and mains voltage surges.

Q. I can call locally, but I can't make a connection with someone in
another city.
A. Be sure you have selected and assigned a Long Distance ISDN carrier,
and informed both the local provider as well as the long distance
provider. Also, try dialing 1010222 + 1 + area code + number this will
force it through MCI, there is a good chance this will get your call to go
through.

Q. Why does the sending end of the telephone circuit hear digital
"breakup", while the receiving signal is clean (or vice-versa)?
A. After the two wire connection to the Zephyr through the "U" connector,
from the demarc of the telephone company , the ISDN is a "4 wire" system.
Its possible that one "direction" of the circuit is experiencing errors,
while the other is pristine.

Q. I can make and receive digital calls fine, but my Zephyr will not
function on POTS calls.
A. The ISDN line needs to have both CSD (Circuit Switched Data) and CSV
(Circuit Switched Voice) enabled.

Q. Can the Zephyr Xstream be remote controlled?
A. Yes. All the menu functions of the Xstream can be accessed with an
ethernet connection between a PC and the Xstream, using Internet Explorer,
or another compatible browser.

Q. Is the Zephyr Xstream able to be used outside of the USA?
A. Yes. The power input accepts mains voltages between 100 and 264 volts
at 50 to 60 Hz. The ISDN "U" input is used in North America, and the "S"
input is used in most other parts of the world. The ethernet connection
is standard world wide.



TELOS PHONE FAQs

Q. Can the Telos One be used with VoIP lines?
A. Not usually. We have had reports of some VoIP lines working with a
Telos Hybrid, but most of the time, results are not satisfactory. The best
thing is to order a POTS (Plain Old Telephone Service) line for your
hybrid.

Q. I am getting a hum when I connect my Telos Hybrid to my computer.
A. The Telos hybrids use balanced audio connections for input and output.
If you try connecting to an unbalanced source or destination, you may
encounter hum and noise due to a mismatch.

Q. I keep hearing a low level distorted feed through of my voice on the
caller output.
A. The Telos hybrids usually can null better than 40dB on good lines.
Usually that kind of feed through is due to overloading the input stages
with too high of a level.

Q. I hear an echo on some of my incoming calls.
A. Nothing in the Telos hybrid uses a time delay, so that echo is most
likely the result of the telephone lines circuitry.

Q. I hear a "whoop whoop" or "alien - Darth Vaderish" sound on my caller
output.
A. The Telos hybrids use a slight pitch shift in the output audio which
greatly reduces the tendency toward audio feedback if an open speaker is
used in the studio. The "whoop whoop" is the result of some output audio
getting returned to the input. It may be due to an imperfect mix-minus, a
really bad line, an open speaker or loud headphones in the studio.

Q. My POTS lines come through a PBX. When my 1X6 places a call on hold,
the PBX will not release it.
A. The 1X6 contains its own switching and may "fight" a PBX's switching.
Try using the "loop through" function in the 1X6 to allow the 1X6 to
control the POTS lines before reaching the PBX.

Q. The 1X6 will not hold a line or will not allow two lines to be
"mashed" conferenced.
A. Check to see if there is anything else connected to the POTS line
through a splitter or other wiring. The 1X6 is designed to be the ONLY
interface connected at any one time to a POTS line.

Q. My 2X12 ISDN installation won't "recognize" my incoming calls.
A. Be sure you have entered the SPIDs and the MSN/DNs (directory numbers)
correctly. Remember the SPIDs need the 4 number "suffix" (such as the
0101) entered correctly, while the MSN/DN does not (typically just 7
digits).

Q. My 2X12's incoming calls drop to a very low level after several
seconds and remain almost inaudible.
A. Reduce the AGC setting to a lower number. Start with a number about 2
and gradually increase them until the AGC sounds "correct" for your
location and lines.

Q. I can't get certain functions to appear in my Desktop Director screen.
A. Be sure you have selected the appropriate Desktop director function,
"Producer" or "Talent". Certain functions are 'locked out' while in the
Talent configuration, to prevent unintended configuration changes "on the
fly".

Q. My callers say they can't hear the station's talent very well, and I
turned up the send to caller input audio, and all I get is distortion.
A. FCC regulations prevent a "modem" type device from sending more than a
-10 db down the telco lines. The 2X12 has an internal limiter to prevent
Telco overdrive, hence the limit on send levels.