Filter
Top Products
ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85
7-29
Field 4 Retry permits multiple attempts to seize a busy trunk from the specified trunk
group.
This field is primarily applicable for those trunk groups routed over analog facilities
and use one of the following trunk types: 41, 42, 43, 46, or 47. Depending on the
particular configuration, RETRY may or may not be applicable for ISDN
applications. Field encodes and their descriptions are:
0
1
When multiple retry is not desired RETRY NOT ACTIVE. The ISDN-PRI
protocol contains retry capability. When signaling type 20 is selected, 0 encode
is required.
Field 5
Field 6
Field 7
Recommended for ISDN applications where the 40-series of trunk types is used.
Encode 1 enables a double retry and thus provides slightly improved call
completion, particularly for large trunk groups that span across more than one
transmission facility.
Not applicable for ISDN applications. Therefore, the required option must be 0 for
not active.
Not applicable for ISDN applications. Therefore, the required option must be 0 for
not active.
Not applicable for ISDN applications. Therefore, the required option must be 0 for
no failure threshold. See field 17 of procedure 107, word 5, for related information.
NOTE: This field is only applicable for analog trunk facilities. It permits the
user to establish a trunk failure threshold that, when exceeded, will generate an
alarm. The threshold limit will affect service availability and, on an indirect
basis, the customer’s maintenance costs.