Panasonic KX-TDA0187, Руководство пользователя

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7.2.2. Line Interface Loopback
This card has a relay for loopback test on the primary side of the line to cut and divide into the
line failure or the PBX's own failure, when there is a defect in operation.
Fig.5.3 Outline diagram of the line interface
7.3. DSP
7.3.1. DSP Function Outline
This card realizes the following functions as in-band signaling function by DSP.
-DTMF Receiver
-DTMF Generator
-MFC-R1/R2 Receiver
-MFCR1/R2 Generator
However, DTMF Generator has also a resource on the Main Body side of the TDA160 system.
Table 5.5 shows a list of the DSP Resources by card type.
See the "DSP Interface Specification for T1 Card" for the details.
Table 5.5 List of DSP Resource by Card Type
Card Type Function Resource Target Specification
No. of Channels Procedure of Implementation
T1 DTMF Generator 24 DTMF Generator on the Main Body
DSP
DTMF Receiver 24 DSP
MFC-R1
Generator 24 DSP
MFC-R1 Receiver 24 DSP
7.3.2. DSP Peripheral Interface
The function of the DSP shown in Table 5.5 is processed through the PCM highway. The PCM
highway is connected with a local highway (2.048Mbps) of the ASIC (IC2) through the
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