Verilink WANsuite 6x30 (34-00315.B) Product Manual - Manual (Page 34)

3-6 W A N s u i t e 6 x 3 0
F ra m in g Selects the framing for the Network side of the DSU/CSU.
Values ESF, D4
Default: ESF
C o d in g Sets the Network side line coding.
Values: AMI, B8ZS
Default: B8ZS
L in e B u ild -O u t Sets the transmit Line Build Out (LBO) for the Network interface.
Values: 0,
−
7.5,
−
15.0,
−
22.5 dB
Default: 0 dB
T im in g Sets the timing source to synchronize the unit’s internal timing generators. In
all cases, slips are controlled to occur on frame boundaries at the Network
port when timing synchronization is lost.
Definitions of the timing sources are as follows:
Internal – The unit’s internal frequency standard (T1 1.544 Mbps ± 50 bps)
is used for all timing.
Network – Timing is derived from the Network port recovered clock.
Z ero S u p p ressio n Determines whether ones density insertion is activated after 15 zeros. This
parameter is ignored if the Coding parameter is set to “B8ZS.”
Values: Disable, Enable
Default: Disable
P R M E n a b le Lets you establish which performance messaging standard will be employed
to initiate Performance Report Message (PRM) functions. Setting this field to
“Enable” instructs the unit to use ANSI T1.403, which sends a PRM once
every second. Setting this field to “Disable” instructs the unit to use AT&T
TR54016, which provides performance reporting on request only.
Values: Disable, Enable
Default: Disable
Error Status and Alarm Thresholds Table
The unit can be programmed to generate an alarm condition based on a
specific level of performance degradation. The Network screen presents a
table that provides current error status and alarm threshold information.
Acceptable alarm thresholds are set for periods of 15 minutes (900 seconds)
and sampled every second. The error types listed in the paragraphs below can
be preset to a value between 0 and 900 seconds. Setting a field to “0” (zero)
disables the alarm on that statistic. To effectively disable alarm reporting, set
all fields to “0” (zero).
The 15-minute time frame is not based on the TR 54016 or T1.403 interval
boundaries, but is a time window based on the accumulated counts over the
previous fifteen 1-minute intervals. In all cases, if the number of actual