2 - 496 Memory Blocks___________________________________________________________________________________Document Revision 4 Electra Elite IPK___________________________________________________________________________________3-77 ISDN-BRI/PRI Directory NumberChecking SelectionGeneral DescriptionUse this Memory Block to determine whether or not the BRT/PRT ETU passes theDirectory Number to the CPU when it is received in the ISDN Set Up message.EnhancementR4000 or higher and BRT Firmware 2.05 or higher support DID for ISDN-BRI Trunks.This allows BRI and DID callers with non-matching SPID Numbers to determine whether thesystem checks the called party number with the SETUP message and the SPID setup. When this Memory Block is set toNO, DID calls can be received on BRI trunks and directed according to Memory Block 1-1-22 (DID Digit ConversionTable).DisplaySettingsLK 1 LK 2 LK 3 LK 4 LK 5 LK 6 LK 7 LK 8 The shadedselection is thedefault.NO YESProgramming Procedures1 Go off-line.2 Press LK3 + G + GG to access the Memory Block.