––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– PDIU-DS Modem Pool Installation1434. Set the PIOU or PIOUS SW3 switch to the TTY position (RSSU is always TTY, SW3 isnot required).Note The PIOU or PIOUS SW3 switch is set to the MODEM position for IMDU operationonly.5. Set the P13 jumper plug on the PIOU to the BELL configuration, or cut the W4 jumper onthe PIOUS (also for BELL configuration).Note The P13 (PIOU) and W4 (PIOUS) CCITT configurations are not normally used in theUSA.6. Use Program 03, Code 41 for PIOU, PIOUS, or RSSU TTY port; or, Code 49 for RSIU/RSIS, Slot 11. If using RISU or RSIS, set the appropriate TTY port and TTY port baudrate using Program 76.7. Set the communication parameters of DKAdmin/DKBackup to: 1200, 2400, or 9600 BPS,7 data bit, even parity, and one stop-bit. This is done from the DKAdmin/DKBackupOptions/System Installation/Communication Setup Option.8. Use the DKAdmin/DKBackup “Dial DK” function to call the External modem from theDKAdmin/DKBackup PC as follows:© If the External modem is connected to a dedicated CO line, call the CO line number toestablish modem communication (see Figure 18 on Page 132).© If the External modem is connected to a standard telephone port, call a Strata DK COline that can be transferred to (or programmed to ring) the standard telephone modemport to establish modem communication. It is also possible to establishcommunications by calling in on a Strata DK DISA DID, or Auto Attendant, CO lineand dialing the intercom number of the modem connected to the standard telephoneport (see Figure 19 on Page 133).
