9-14 TROUBLESHOOTING
setup or SPIDs haven’t been entered.
Init Init can also appear when a European ISDN connection
has been idle for a while. This is normal, and Ready will appear
when you start using the connection again.
Ready Init means only one working ISDN channel
Ready Wait means incorrect SPID2
Ready Ready This is what you want to see. ISDN is working.
iISDN TIP!
If you see Ready Ready when the switch type is set to PTP, and you cannotdial, it’s likely that your line is really National ISDN-11.
What kind of ISDN do you have, and is the Zephyr 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 given SPIDS, you probably have National ISDN-1. One SPID means one
channel was activated, rather than the usual two. You won’t be able to make a stereo
connection.
• No SPIDs and only one phone number generally means AT&T PTP. However:
• Sometimes the telco will give you a SPID even when you have PTP. If so, disregard
it.
SPIDS beginning with 01 mean you are on the AT&T 5ESS switch. A SPID of
01YYYZZZZ0 generally means that you have PTP. If you have 2 SPIDS with this format
suspect that you may have Custom Point-to-Multipoint (PMP) which is not supported by
the Zephyr (but see below). 2 SPIDS which look like 01YYYZZZZ000 means you probably
have Natl ISDN 1. National ISDN SPIDS can take many other forms as well.
The above generalizations aren’t law. Technically, a phone company can assign any
string of digits — your phone number, their phone number, or even their birthdays — as
a SPID.
• In Europe, you have either NET3, EuroISDN or an older protocol, such as ITR6 in
Germany or VN2 in France. The Zephyr only works with EuroISDN although it may
work with NET3.
iISDN TIP!
If your Telco did not properly follow the ordering information you sent themfrom the appendix of this manual (you did use that information, didn’t you?)
1 The PTP protocol does not require SPIDs, so ZephyrExpress does not send or check
them but assumes the line is okay. Meanwhile, the telco is still waiting for those darn
SPIDs.