Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
9-1
Datafill and subscription parameters
This chapter describes the subscription parameters that apply to the primary
rate interface on the DMS-250 switch and their datafill.
PRI subscription parameters allow customers to support and configure PRI
to their particular needs. The DMS-250 switch assigns the parameters by
datafilling a set of software tables. At the end of this chapter, there is
information about the CI command DISPDCH.
Parameter groups
The parameters are divided into three groups as listed below.
Facility parameters
• define the hardware configuration of the PRI
• include locations of PRI B- and D-channels, Q.931 message
characteristics, and variable aspects of the call control procedures
Service parameters
• define the logical services applied to the PRI interface
• primarily specify the number of calls allowed on an interface, together
with the allowable bearer services
Integrated access parameters
• define the integrated services access (ISA) environment of the PRI
interface
• are specifically related to call types
• supply information for translations and routing
For more information on ISA subscription parameters, see Chapter 9,
“Feature interaction.”
Parameter relationships
The facility, service, and ISA parameter groups that define a PRI interface
are closely related. The basis for the association among the three groups is
To Next Page
Loading...
