Support User Manuals

Telos Zephyr Xstream Two-Way Radio User Manual

Open as PDF

of 381

USER’S MANUAL

Section 10: APPLICATIONS GUIDE 177

XstreamalsohastheusefulabilitytosendStereototwosites.Thisisoutlinedbelow:

Xstream C

Transmit AAC J-Stereo 64

Xstream A

Receive = AAC 64

(use "Line 1")

Xstream B

Receive = AAC 64

(use "Line 1")

10.5 Choosing a Receive mode

YoucouldalwaysusetheAUTOoption.Youwillneedtosetthecorrectsamplerate,however.

Usingtheappropriatereceivemodewillresultinthefastestlockwhenconnectionsare

establishedhowever.TheappropriateReceivemode(setintheCODECmenu)willbe

determinedwiththeencodingorTr

ansmitmodeusedatthefarend.Theterminologyusedat

thefarendwillvary.Therefore,wewillbreakthissectionintosub‐sectionsdependingonthe

far‐endcodec.

c

COMPATIBILITY TIP!

When two channels are required for transmission (i.e. for Stereo, J-Stereo, and Mono 128) an

"inverse multiplex" (IMUX) scheme must be used to break the standard MPEG data stream

into two streams for transmission.

In Layer-2, the Zephyr Xstream uses the CCS CDQ (TM) IMUX protocol. Most Layer-2

codecs support this method, allowing for compatibility among different codec manufacturers.

The Telos splitter used for AAC and AAC-LD, is published on our website to encourage

interoperability with other manufacturers.

w

IMPORTANT!

The Auto mode is not applicable when using "V.35 Single" for your Interface in the TEL

menu. You must select the appropriate receive mode in this case.

See Section 9 (V.35/X.21 Option) for details.

previous next