ADTRAN 3000 - Manual (Page 78)

Chapter 5. Optional Calling Features
5-4 Express 3000 User Manual 61203153L2-20
MESSAGE WAITING INDICATOR
If 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 number
on which a Message Waiting Indicator has been provisioned. Once a
message is read, the stuttered dial tone stops.
POTS PORTS DISTINCTIVE RINGS
You 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, call
conferencing, message waiting, and call transferring are
assigned a unique feature identifier number. This number may
not be the same in all areas.
S-registers 90 through 93 (see Appendix A) contain the calling
feature identifier numbers used by the Express 3000. If these
numbers do not work in your area, contact your ISDN
provider.