Ksu1 Component) - Comdial DX-80 Technical Manual

Overview
The CPM also provides the following standard connectors:
• Music Channel 1 - On Hold/Background Music Interface,
• Music Channel 2 - On Hold/Background Music Interface,
• Control Contact (Loud Bell / Door / External Page Control),
• External Paging Equipment Interface,
• RMP Serial Port - for onsite PC-DBA system database programming, and
• SMDR Serial Port - for connection to ancillary SMDR/Call Accounting equipment.
The CPM has two option strap jumpers one for database start-up (J11) and one for music channel one
source (internal/external) selection (JP30).
• J11 Cold Start/Normal—J11 is used to force load database default factory settings. This jumper
will normally never require operation after the initial power up sequence is completed. However
should the need arise to return the site database to the factory settings this jumper is used to
perform a cold start.
• JP30 Internal/External—JP30 is used to select the Music Channel 1 source. The DX-80
provides a synthesized music source for music on hold, in applications where no music source is
available. The synthesized tune is repeated. JP30 is in the "External" position when it ships
from the factory.
1.6 408M (KSU1 Component)
The 408M is the large circuit board that is packaged inside of KSU1. The 408M provides interface for
up to four loop-start CO lines and 8 digital extension ports. Additionally the 408M regulates the 24
volt DC power from the source to produce all required logic voltages and operations voltages. There is
also a Power Failure Port located on the 408M that is connected to the first CO line circuit. Whenever
power fails, this port becomes active with dial tone from the CO line connected to the first CO line
port.
18 Comdial October, '03