Verilink T1 Access Router (34-00327) Product Manual - Manual (Page 116)

4-8 T 1 A c c e s s R o u t e r
Learned DS0 Rate Specifies the rate at which each discovered DS0 will be set.
Values: As 56K/64K
Default: As 64K
NOTICE: The unit will search for active DS0s for a maximum of 7 seconds if
learning “As 64k” and for 30 seconds if learning “As 56K.”
Timing 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
ports when timing synchronization is lost. The options are as follows:
Network
−
Internal, Network
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.
Mode Selects the network service type.
Values: Long Haul, Short Haul
Default: Long Haul
Line Build-Out (Long
Haul)
Sets the transmit Line Build Out (LBO) for the Long-Haul network interface.
Values: 0,
−
7.5,
−
15.0,
−
22.5 dB
Default: 0 dB
DSX Level (Short
Haul)
Specifies the DTE DSX-1 interface output level.
Values: 0
−
110, 111
−
220, 221
−
330, 331
−
440, 441
−
550, 551
−
660, >661 ft
Default: 0
−110
ft
Zero Suppression 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
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 1-5, 10, 20, or 30 seconds
(900 seconds), and are sampled every second. The error types listed in the
following paragraphs 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