Telos ZephyrExpress user manual Ready when the switch type is set to PTP, and you cannot

			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.
i			means only one working ISDN channel
	Ready	Init
			means incorrect SPID2
	Ready	Wait
			This is what you want to see. ISDN is working.
	Ready	Ready
	IfISDNyouTIP!see Ready		Ready when the switch type is set to PTP, and you cannot
	dial, itÕs 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

aSPID.

i • 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.ISDN TIP!If your Telco did not properly follow the ordering information you sent them

from the appendix of this manual (you did use that information, didnÕt you?)

1The 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.

9-14 TROUBLESHOOTING