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7-18 Feature interaction
Test calls
DMS-250 switch test calls enable various manual and automatic tests from
distant toll and local offices without intervention at the called office. The test
line presents known conditions upon connections being made to them. Test
line test calls can be originated manually from the trunk test position (TTP),
or automatically in automatic trunk test.
The switch supports connections to T100 and T102 test lines from PRI
trunks.
The switch also supports calls received from distant offices. These calls are
classified as test calls by conforming to the format 10X or 95X-XXXX. The
digits 10 or 95 are information digits that indicate test calls. For more
information on test calls, see Chapter 10, "Service verification."
IEC screening and routing
PRI supports the following IEC screening and routing services. Screening
and routing capabilities denoted with an * are provided for IEC-translated
calls and calls that use ISA direct routing. These screening and routing
functions can be used for all call types, regardless of LTCALLS datafill.
Restricted usage by date and time
This feature restricts subscribers from making calls during specified time
periods based on the parameter USERCLASS associated with the filed
authcode in table AUTHCODM.
The authcode parameter specifies the type of time-restricted service, such as
the following:
297-2521-106 Standard 23.01 March 2001
100 test line—known as quiet or balanced termination; provides noise
and loss measurement
102 test line—known as milliwatt testline; provides far-to-near
transmission loss measurement
restricted usage by date and time
incoming exclusion
time-of-day routing *
class-of-service screening
trunk group class-of-service screening *
retranslations for originating PRI interfaces *
unrestricted (subscriber is not time limited)
restricted class 1
restricted class 2
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