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Tit bits
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Important System Parameters used in the C-DOT Exchanges 1.XCHG-TYPE: Exchange type (XCHG-TYPE) parameter as per the site should have following values for various type of C-DOT exchanges. XCHG -TYPE=2 for max and '4' for TAX or ILT. NOTE: XCHG-TYPE=4 and CLI-INFO=1 for TAX/ILT functioning. Otherwise the Exchange will not support CLI for TAX functions in case of R2-R2 and R2-ISUP transit calls. In addition to exchange configuration, the incoming R2 trunk groups from parented stations should have CAMA = YES with TGP-TYP = ORD. 2.PCO-MTR-LCL: This Parameter governs the charging for intra exchange calls originating from CCB lines. The value given against this parameter indicates the charge rate number which may be given as per site requirement to govern the charging of intra exchange calls. NOTE: Once the value of system parameter SUB-CRG-CTG is made as '2' for implementing category based charging, the parameter PCO-MTR-LCL will no longer be effective. 3.NON-MTR-LCL: This parameter governs the charging for intra exchange calls terminating on non-metered numbers. 4.MIN-SUBS-DIALS: This parameter indicates the minimum number of digits a subscriber should dial after which the call can be processed. This parameter should have proper value as per the site requirement. For example in an exchange where '5' digit numbering is followed and this value is set as '6' , then no call will pass because minimum number of digits required for processing a call will never be received. Hence in this case the parameter should have a value equal to '4'. NOTE: MIN-SUBS-DIALS value should always be greater than or equal to number of digits in exchange code but it should be less than the number of digits used in the DIRNO in the Exchange. For example if the exchange code=234 and '6' digits numbering is there , then the MIN-SUBS-DIALS should be greater than "3" and less than "6". (it may be 4) 5.SPl-RNG: This parameter enables or disables "distinctive ringing" feature. This parameter indicates whether different type of ring is to be fed for local calls and STD/ISD calls if TTAX is defined on the incoming TGP. If SPL-RNG = 1 is enabled then different ring is fed. If SPL-RNG = 0 (disabled) same ring is fed for all types of calls. NOTE: This parameter can be made as "1" only after ensuring that PSU ECN is implemented for Continuous ringer in the card and compatible EPROM in the PSU and TIC cards. Checksum=e2d6 for 2-2-1-6 software. 6.CCB-CL-CONVRS: This parameter indicates that after how much time the calls originated from ORD-CCB lines are to be disconnected. In BMDC the value is set as 1800 (3 minutes). So all the calls originated from ORD-CCB lines will get disconnected after 3 minutes. This can be set as per your site requirements. 7.CALL-DUR-THR: This parameter defines the time duration threshold of a call after which a report will be generated and redirected to OOD and Printer. The print will be generated for all calls violating the call duration defined in this parameter after the call completion. 8.CALL-CHRG-THR: This parameter governs the threshold for charge units of a single call. All the calls for which the charge units are more than the specified value will be printed and displayed on OOD after completion of the calls. Default value is 100 units. 9.PSWD-TAMP-THRS: This parameter indicates the number of wrong password attempts allowed for dynamic STD lock opening. If the consecutive wrong attempts exceeds the value defined against the parameter, the subscriber dynamic STD activation / deactivation is disabled and the subscriber is put under TAMPERED status. Default value is 10 in BMDC. The maximum value is '20'.
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