Telos Zephyr Xstream User Manual page 294

Check the Send bargraph meter for proper indication. Confirm that the top Send LED is
flashing not at all. Input/send gain is set on the AUDIO menu screen.
Output setting correct?
The Level Out setting in the AUDIO menu should match to the equipment that accepts
the Xstream's audio feed.
13.6.4 ISDN Difficulties
Condition: Can't Get ISDN "
First try disconnecting the ISDN circuit(s) in question and waiting a full 60 seconds (leave the
Zephyr Xstream on) and then reconnect the circuit.
Are you connected to the correct jack on the rear of the Zephyr Xstream?
If in the USA & Canada: you will probably be using the lower (RJ‐11 style) jack.
Outside the USA & Canada: you will probably be using the upper (RJ‐45 style) jack. Try
dialing. Some Euro ISDN lines will show inactive until they are in use.
Are the jumpers correct on the ISDN Interface card?
JP2, if present, must be jumpered (newer cards no longer have this jumper).
What kind of ISDN do you have, and is the Xstream set to match it?
The telephone company should have given you the ISDN protocol when the line was
ordered. If you find yourself in the field without this information, it is usually possible to
piece together what you need.
•
If you are outside the USA & Canada, you most likely have ETS 300 (Euro ISDN). If
you are in Japan, you have INS64. These users do not need to enter SPIDs. MSNs
are optional.
•
If you are given SPIDs, you probably have National ISDN 1 (NI‐1) or DMS 100 (DMS‐
Cust.) for your ISDN protocol. One SPID means one channel was activated, rather
than the usual two. You won't be able to make a stereo connection. National ISDN 2
is backward compatible with the Zephyr Xstream (use Natl.I‐1 for Telco in the third
TEL menu)
•
No SPIDs and only one phone number generally means AT&T Custom (PTP) protocol.
Occasionally PTP users will be given a SPID (usually of the format 01xxxyyyy0). This
can be ignored. AT&T Custom (PTP) might be called Lucent Custom (PTP).
•
It is best to know both the ISDN protocol of your line as well as the brand and model
of the Telco's central office switch itself. A given model of switch only supports a
specific set of protocols, so this may help you infer the correct information. Also,
Section 13: Deep Tech Information and Troubleshooting
USER'S MANUAL
Ready"
Indication
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