170 / Private networking using PRI SL-1Modular ICS 7.1 Installer Guide N0130943 027. Press ≠. The prompt displays Use:.8. Press CHANGE to until you reach Routing tbl.9. Press ‘. The prompt displays Tel #:.10. Enter the number to access the external voice mail system.11. Exit programming.Using centralized voice mailIf you use NVM, ensure that you provide the correct user cardsfor system access. Users with telephones connected to theMeridian or Norstar unit on which NVM is installed, useinternal voice mail feature codes to use the system(FEATURE 981, and so on). Users on other nodes of thesystem, use the remote access codes, which are similar to thecodes they would use if the central voice mail system was theMeridian-based system.Note: Meridian mail and Norstar voice mail can co-exist onthe same Meridian, however, users can only beconfigured for one of the systems.Configuring Centralized Auto Attendant (CAA)System configuration for centralized Auto Attendant dependson where the NAM is connected. The system with the NAM isconfigured using the CAA DN and a target line. The systemsthat are remote to the NAM are configured through theTelco features sections.All nodes must have a unique Private Network Identifier(PNI), which is defined under Dialing Plan. On each node,as well, the PNIs of adjacent nodes are programmed underHardware.