Telephone Systems General Description

Features
Live System Programming
58 Strata CTX General Description 11/02
Group CO Line Button
Group CO line buttons are like individual CO line buttons except these buttons represent all the
lines for a particular ISDN Channel Group. This enables ISDN channels to operate similar to
analog CO lines on a key telephone system. These buttons may have appearances on multiple
telephones providing call coverage across several telephones. Multiple appearances of the same
Group CO line button is possible on each phone to allow multiple call handling for that group from
each station.
Live System Programming
Programming the Strata CTX from an on-site or off-site location does not interrupt the operation
of the system in most cases. It is interrupted for hardware upgrades.
Lost Call Treatment
Lost Call Treatment provides the CTX a mechanism for terminating calls that cannot be
terminated with the usual calling patterns. One scenario would be a call that is recalled to a station,
the station user is no longer there to answer the recall and no forwarding pattern is programmed.
The call will ring at the recalled station until the Lost Call Timer has expired after which the
system will direct the call to the Lost Call Destination.
Message Waiting
Any station and most voice mail devices can turn on a message waiting indicator for a designated
digital or standard telephone station.
LED Indication
Message waiting lights can be activated when a voice mail message has been left, or they can be
turned on by a calling station. The station user can retrieve messages by pressing the button next to
the message waiting light or by dialing an access code from a standard telephone.
The telephone main
0VJ light indicates a message is waiting for the telephone [PDN]. Up to four
[PhDNs] per telephone can also have individual message waiting LEDs assigned to flexible
buttons.
Stutter Dial Tone
Stutter dial tone is also used to indicate a message is waiting. When a station user goes off-hook,
two different available stuttered dial tones indicate whether a Message Waiting (MW) or DND
condition exists. The MW-stutter dial tone indicates a message is waiting for the station. DND-
stutter dial tone indicates DND is set at the station. If both conditions exist simultaneously, the
MW-stutter dial tone has priority. This is very valuable to station users that do not have a MW
Light Emitting Diode (LED) or
'1' button LED on their telephone. (See Table 30 on page 80 for
details of each type of stutter dial tone.)