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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 7: ISDN BASICS 135

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DEEP TECH NOTE!

The actual 2 B channels (i.e. timeslots) of the BRI are assigned on a per call basis. Therefore,

from a theoretically correct viewpoint, Lines 1 and 2 do not fully correspond to B1 and B2.

Fromtheperspectiveoftelephonenetworkrouting,eachBchannelappearstobeaseparate

linewithitsownnumberandindependentdial‐outcapabilities.Sinceeachhastobedialedor

answeredseparately,theyappeartobe“lines”tousersalso.Toreduceconfusion(hopefully)

fornon‐technicalusers,werefertoaBchann

elasa“line”ontheZephyrXstream’smenus.

SPIDs

ServiceProfileIDentificationnumbers(SPIDs)areonlyrequiredwiththeZephyrwhenyouare

usingtheNationalI‐1orDMSCustomfunctionalISDNprotocolsintheUSA.Thisnumberisgiven

totheuserbythephon

ecompanyandmustbeenteredcorrectlyintotheZephyrXstreamin

orderfortheconnectiontofunction.SPIDsusuallyconsistofthephonenumberplusafew

prefixorsuffixdigits.ThereisfrequentconfusionbetweentelephonenumbersandSPIDS,even

amongTelcopersonnel.WhiletheSPIDgenerallyincludesthecorrespondingph

onenumber,

thisisnotnecessarilythecase.

FornumerousadditionaltipsonSPIDs,seeSection11(DetailedmenuReference).

i

ISDN TIP!

ETS 300 (Euro ISDN) and INS 64 (Japanese ISDN) users should disregard all references to

SPIDs. These ISDN protocols do not have SPIDs! If your ISDN configuration uses MSNs,

they may be entered in the DN/MSN menu selection of the TEL menu.

Ifyouareusingthe“NationalISDN‐1”(NatlI‐1)orthe“DMSCustom”functional(DMSCust)

protocol,yourTelcoservicerepresentativemustgiveyouoneortwoSPIDnumbers.Youshould

getoneSPIDforeachBchannelyouordered.

Uponpower‐up,connectionoftheISDNline,orreboot,theZephy

rXstreamandtheTelco

equipmentgothroughaninitialization/identificationroutine.TheZephyrXstreamsendsthe

SPID(s)and,ifitiscorrect,thisfactissignaledbythenetworkand“Ready”willbedisplayedfor

thestatusofthatBchannel.ThereaftertheSPIDisnotsentagaintotheswitch.

Realtorsremindbu

yersthatthethreemostimportantfactorsofreal‐estatesuccessare

Location,Location,andLocation!Wewanttoremindyouthatthethreemostimportantfactors

toISDNsuccessare:GettheSPIDS,GETTHESPIDs,please

get the SPIDs!

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