Electroline Control Unit IV - Internal Features; Table 1-3: Control Unit Ports

Control Unit IV Reference Manual Product Description
529-0004 Ver.3 1-9
Ports
The Control Unit’s COM 1, 2 and 3 are DCE-type serial ports. For more information on the
pinouts of the Control Unit’s ports, see Appendix B. The RF ports are all standard female
F-type connectors for connecting standard 75-ohm coaxial cable. Note that the
BACKUP
port
is not an RS-232 connector; only the Electroline redundancy cable should be connected to
this port if you have a redundancy system. See Chapter 3 for more details on redundancy
systems.
Table 1-3: Control Unit ports
Control Unit ports Purpose/Support
COM 1 or COM 2 When the Control Unit is installed alone, this port is used
for host computer connections (billing systems, etc.) with
CSG, ICOR, NTMF, SSMN, and Terminal protocols.
COM 1 When two Control Units are installed in a redundancy
system, this port is used for host computer connections
(same protocols as above).
COM 2 When two Control Units are installed in a redundancy
system, this port is used for synchronization (with backup
Control Unit), with preset communication parameters.
COM 3 For all Control Units, this port is used for setup (Terminal
protocol only).
BACKUP
connector When two Control Units are installed in a redundancy
system, this port is used for redundancy (with backup
Control Unit), with proprietary settings (not RS-232).
RF OUT
and
RF IN
For all Control Units, these ports are used for RF
connections (data carrier).
TEST IN
and
TEST OUT
For all Control Units, these ports are used for RF test
connections.
1.4.2 Internal features
The Control Unit’s open architecture makes it possible to upgrade or modify certain features:
the expansion slots allow the possibility of adding boards for specific applications and the
frequency-agile single FSK modulator allows cable operators to change the carrier’s
frequency.