Conducting calls – enhanced functions51Step by StepDirected assignment of an MSN (multi-ple subscriber number)Multiple subscriber numbers are phone numbersbelonging to an ISDN multiple device line. They areused for the directed addressing of terminals, for exam-ple when a fax machine has a separate number. Beforeselecting an external connection, you can directlyassign a configured multiple subscriber number. Thisthen appears on the called party’s display.This function can also be called by entering the code(Æ page 103).c or d Press the Talk or Speakerphone key.Call the system menu.> < [ Select the menu item and confirm.> < [ Select the menu item and confirm.o Enter the required multiple subscriber number.o Enter the required external phone number. The phonenumber is dialled.Making calls using identificationcodesIn the case of calls you make to external partners, youcan enter and charge the call costs on the basis of indi-viduals, customers, accounts and private calls,for example, by means of account codes. The accountcode (ACCT) can contain up to 11 characters and isincluded in the data printout. The ACCT is only trans-ferred after a call has been completed. The ACCT can beentered before and during the external call.This function can also be called by entering the code(Æ page 103).c or d Press the Talk or Speakerphone key.Call the system menu.> < [ Select the menu item and confirm.MenuService?*41=TemporaryMSN?MSN no.111111:MenuService?