201 TWABE - Partial Dialling Plan for Networking


Restrictions	Functions of the AMO	Error Messages and Advisories
Interrelationships	Parameter Description

AMO TWABE is used by call processing (CP) to collect dialed digits up to a predefined number in the device handler (DH) and to present them to digit analysis as a unit. This obviates the need to process those messages on the way between the DH and the CP which would otherwise be replaced after each digit dialed.

To set up TWABE, the digit sequence to be translated is specified first (up to 3 digits) followed by the number of digits to be collected before the dialed number is to be passed on to digit analysis.

Example:

Of the station numbers beginning with 32, there is not single one which has less than 5 digits and leads to a digit analysis result (DAR). To account for this fact, 5 digits are to be collected right as soon as the digit sequence "32" is detected.

It should be noted that unlike WABE (digit analysis) TWABE has no DPLN groups. This is why, for a specific digit sequence, only that value should be entered which corresponds to the shortest length of all station numbers which begin under any DPLN group with this digit sequence.

Example:

Under 4300, DAR=HUNT is set up in DPLN=1 and under 43 DAR=TIE in DPLN=2. If the value 4 were entered for parameter LEN in TWABE under STNO=43, the system would not be able to identify a situation in which DAR TIE is dialed because it would always expect 4 digits. Only LEN=2 must be entered under STNO=43. This, however, means that there is actually no entry since "43" already consists of 2 digits.

The TWABE is n o t automatically derived from specific entries in the WABE. AMO TWABE must therefore be used to set up the complete partial DPLN for all internal and external station numbers as well as all codes.

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