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Telos Zephyr Xstream Two-Way Radio User Manual

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USER’S MANUAL

Section 3: GUIDED TOUR of the HARDWARE 46

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HOT TIP!

Normally, the Telephone Company should supply an RJ-11 style jack for the U interface. This

is the same 4 or 6-pin plug used for analog lines. However, sometimes you may find an 8-pin

RJ-45 style jack–and sometimes you may even be charged extra for it! If you have this

situation, an RJ-11 plug can be inserted into the center of an RJ-45 jack to make things work.

If you discover that the Telco charged you extra, be sure to request a refund!

SInterface(4wire)foruseworldwide

TheSinterfaceisa8‐position/8‐pinminiaturemodularjack(RJ‐45style)andissuppliedforuse

outsideofNorthAmerica(wheretheNT1willbeprovidedbytheTelco).Itcanalsobeusedfor

specialapplicationswheretheZephyrXstream’sbuil

t‐inNT1issharedbetweenitandanother

ISDNdevice,suchasanISDNtelephone.

PIN FUNCTION

1 No Connection

2 No Connection

3 S Transmit to network +

4 S Receive from network +

5 S Receive from network -

6 S Transmit to network -

7 *PS2 Power (-48 VDC)

8 *PS2 Power ground (+) (Top)

*Available only on early production units

The S interface is a standard modular RJ-45 style jack with the

pin-out shown above.

EarlyrevunitshavePS2powersource(48voltsDC)providedonPins7&8topowerexternal

equipmentontheSinterface.ThoseunitswereshippedwithPS2powerdisabled.Toenable‐48

seeSection13(DeepTechInfo)fordetailsandforimportantsafetywarnings.

S

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