CTI Products OTAL On-the-Air Driver Assembly - Manual (Page 5)

CTI Products, Inc. OTAL Driver Assembly User Guide
I
NTRODUCTION
The On The Air Light (OTAL) system allows Carrier Operated Relay (COR) signals from remote receivers to
drive On The Air Lamps at consoles. It provides a jumper-selectable option to add Push To Talk (PTT)
qualifier(s) to the COR signals so that the console light displays only when the console is keyed and a carrier is
received at the receiver.
The OTAL system uses standard modules from the MCN (Monitoring and Control Network) to transport the
remote signals. It also uses an OTAL Driver Assembly. This manual covers the OTAL Driver Assembly and
overall OTAL system overview.
The OTAL Driver Assembly is available in two different versions according to the following table:
Part Number Description
S1-61030 OTAL Driver Assembly with Remote PTT Inputs
S1-61121 OTAL Driver Assembly without Remote PTT Inputs
Figure 1 shows a typical OTAL system. It includes the optional Remote PTT circuitry. The Remote PTT and
Remote COR signals connect to remote CIB modules. The data from the remote CIB modules is sent via EXB
Network Extenders to the IIB modules in the OTAL Driver Assembly.
Figure 1 - Typical OTAL System
Remote requirements to transport the COR and PTT signals vary by system. EXB modules are shown that
utilize 2W/4W leased lines. Other EXB modules are available that use copper or fiber Ethernet, or RS232
channels.
Introduction 5