Other Applications; Transmission Considerations - Nortel Enterprise 1000 Reference Manual

Other applications

The operating range and built-in protection provisions of the OPS analog line
card make it suitable for applications which are variants on the traditional
configuration shown in Figure 52. Examples of such applications are:
• a PBX in a central building serving stations in other buildings in the
vicinity, such as in an industrial park, often called a campus environment.
Facilities can be provided by the local exchange carrier or can be
privately owned. Protection could be required.
• Termination to other than a telephone set, such as to a fax machine.
• Individual circuits on the OPS analog line card can also be configured as
On-Premise Station (ONS) ports in LD 10:
— to have ONS service with hazardous and surge voltage protection
(not available on other analog line cards).
— to use otherwise idle OPS analog line card ports.

Transmission considerations

The transmission performance of OPS lines depends on the following factors:
• the port-to-port loss for connections between OPS ports and other ports
• the transmission parameters of the facilities between the OPS port and
the off-premise station or termination
• the electrical and acoustic transmission characteristics of the termination
These factors must be considered when planning applications using the OPS
analog line card. They are important when considering configurations other
than the traditional OPS application as shown in Figure 52 on page 222. The
following provides basic transmission planning guidelines for various OPS
applications.
Port-to-port loss
Loss is inserted between OPS analog line card ports and other ports in
accordance with the loss plan. This plan determines the port-to-port loss for
each call. When a port is configured for CLS OPS, loss is programmed into
the OPS analog line card on a call-by-call basis. When configured for CLS
ONS, an OPS analog line card port is programmed to a value that is fixed for
Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
Analog line cards Page 223 of 236