Section 700 - Operation
Chapter 3. System Features
ICX-35-700
ICX (International), issued March/1998
57
Considerations
•
N/A
QSIG ISDN Lines
CPC-96, CPC-288, and CPC-576 Version 3.5
Description
QSIG is a digital signaling protocol for private-network phone systems comprised of ISDN lines.
Internationally, it is also called Private Signaling System No. 1 (PSS1).
QSIG, developed in the late 1980’s and still in the process of global standardization, provides the
ability to efficiently interconnect the remote ISDN PBX sites of large organization. In addition to
normal phone service, QSIG also supports advanced applications such as interconnection of voice/
fax/DP servers, broadband private networks, etc. In other words with QSIG “it’s not just a phone line
anymore.”
For more information on QSIG, see Section 570: QSIG Reference.
Hardware Requirements
•
N/A
Related Programming
•
FF2-1: QSIG ISDN Lines
Considerations
•
N/A
Ringing Modes
Description
The System supports multiple types of trunk ringing including the following:
•
Day 1/Day 2/Night Ringing
•
Day 1/Day 2/Night Delayed Ringing
•
DDI Day/Night Ringing
•
DDI Day/Night Busy/Delayed Ringing
•
Busy Lamp Field Immediate Ringing
•
Busy Lamp Field Delayed Ringing
•
Slide Ringing
•
Alarm Ringing
Day 1/ Day 2/Night Ringing
When the System is in Day 1 mode, calls can be directed to ring at one or more extensions or at a hunt
group per the Day 1 ringing assignments.
