2 - 2 Chapter 2Chapter 2 - Blade Installation and Startup2.1.2 Order of Installing Extension BladesThe order that the station Blades (ESIU and SLIU) are physically inserted determinesthe numbering plan.For example, with a digital station blade (16ESIU) in slot #1 (ext. 301-316), when 3 additional digital stationblades are installed in the following order, the numbering plan below applies:After the initial powering up of the system, subsequent powering up or resets will not change the slotidentification. System programming (Program 90-05) must be performed to change the slot identification.2.1.3 Order of Installing Trunk Blades2.1.3.1 Installing COIU, 4TLIU, DIOPU, or BRI Blades:The order in which trunk blades are physically inserted determines the numbering plan.For example, if four blades are installed in the following order, the numbering plan below wouldapply:2.1.3.2 Installing T1/PRI BladesThe T1/PRI Interface blade uses the first block of 24 consecutive trunks.For example, if you have an 4COIU blade with a 4COIDB installed for trunks 1-8, the T1/PRI bladewill automatically use trunks 9-32. If you have 4COIU blade with a 4COIDB installed for trunks 1-8and 17-24, the T1/PRI blade will use trunks 25-48. The T1/PRI blade cannot use trunks 9-16 (evenif available) since they are not part of a consecutive block of 24 trunks.Order ofInstallBlade Slot # Ext Numbers1 2 301-3162 3 317-3323 5 333-3484 4 349-364Order ofInstall Blade Slot # Blade Line Circuits1 5 4COIU with4COIDB1-82 6 4COIU 9-123 8 4TLIU 13-164 7 4TLIU 17-20
