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Page 434 of 544
Other applications
Transmission considerations
553-3011-100
Standard 14.00
NT1R20 Off Premise Station (OPS) analog line card
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 56. 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 may be provided by the local exchange carrier or may be
privately owned. Protection may or may not be a requirement.
•
Termination to other than a telephone set, such as to a key telephone
system.
•
Individual circuits on the OPS analog line card may also be configured
as ONS ports in LD10:
— to have ONS service with hazardous and surge voltage protection
(not available on other Meridian 1 analog line cards).
— to use otherwise idle OPS analog line card ports.
The transmission performance of OPS lines is dependent on a number of
factors.
•
The Meridian 1 port-to-port loss for connections between OPS ports and
other Meridian 1 ports.
•
The transmission parameters of the facilities between the Meridian 1
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 of particular importance when considering
configurations other than the traditional OPS application as shown in
Figure 56. The discussion which follows is intended to provide basic
transmission planning guidelines for various OPS applications.
January 2002
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