Musicam Roadrunner Bedienungsanleitung PDF herunterladen (Seite 13)

CDQPrima USERS GUIDE

6-136-13

allowed. For MPEG operation in the 1-line mode with a non-TA Digital

Interface, you have a choice of all supported bit rates.

Select the encoder bit rate at the Bit Rate prompt or use the EBR

command from a terminal.

6.1.3.2 Encoder algorithm

The CDQPrima supports three basic algorithms, all of which are

described in detail in Section 6.1.

G.722 provides 7.5 kHz audio at 56 or 64 kb/s. MUSICAM enhanced

MPEG Layer II supports bit rates from 24 to 384 kb/s, depending on

Digital Interface Module used, and MPEG Layer 3 supports bit rates

from 56 to 320 kb/s, also depending on installed Digital Interface

module. Please note that CCSO and CCSN algorithms are both

enhanced MPEG Layer II algorithms but are used when connecting to

older CCS Audio Products codecs such as the CDQ1000 and CDQ2000

codecs that have not been upgraded to work with standard-compliant

MPEG Layer II encoders.

Select the encoder algorithm at the Algorithm display prompt

or use the EAL command from a terminal.

6.1.3.3 PKI Compatibility Mode (G.722 Only)

PKI telephones, manufactured by Philips and in wide use in Germany,

require a special frame structure, and your CDQPrima must be set

accordingly to interoperate with these telephones. If you are connecting

to a PKI telephone, select the G.722/H.221 mode from the Common menu

or use the CGH command from a terminal.

6.1.3.4 Encoder Algorithm Mode

The next step (for MPEG algorithms only) is to select the algorithm

mode, Mono, Dual Mono, Stereo, or Joint Stereo. Select the desired

mode at the Algo Mode prompt or use the EAM command from a

terminal.

For G.722, the algorithm mode must be M1. Any other choice is an

error.

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Musicam Roadrunner Bedienungsanleitung Seite 13