Multitech CF220 Guide de l'utilisateur Page 12

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Chapter 2: Sample System
Multi-Tech Systems, Inc. CF220-DID CallFinder User Guide 12
Step 2b Technical: Enter operating parameters of DID lines.
Each DID line has 3 user-specified technical parameters. They are set in the CallFinder software.
Figure 2-5: Configure the lines
Technical Parameters Related to DID Line
Paramete
r
V
alue Comments
Max DID Digits 4 Number of digits received on DID line.
Polarity try A This is a trial-and-error setting. The DID line is a twisted pair. Only when
installed can you know polarity. You determine the polarity by performance
– with wrong polarity, connections cannot be made.
DID Start ask telco Start mode varies with different implementations of DID.
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