Chapter 5. Optional Calling Features5-4 Express 3000 User Manual 61203153L2-20MESSAGE WAITING INDICATORIf your ISDN line provisioning includes a Message Waiting Indicator,a stuttered dial tone is present on the POTS port when a message is un-read. The stuttered dial tone is only present on the directory numberon which a Message Waiting Indicator has been provisioned. Once amessage is read, the stuttered dial tone stops.POTS PORTS DISTINCTIVE RINGSYou can set up the Express 3000 so that POTS ports 1 and 2 have dis-tinctive rings that are easily recognized. S-register 19 controls this fea-ture (see S-Registers on page A-2).When connecting to a National ISDN 1 switch, callconferencing, message waiting, and call transferring areassigned a unique feature identifier number. This number maynot be the same in all areas.S-registers 90 through 93 (see Appendix A) contain the callingfeature identifier numbers used by the Express 3000. If thesenumbers do not work in your area, contact your ISDNprovider.
