Verilink PRISM 3030 (34-00208.L) Product Manual - Manual (Page 38)

28 C HAPTER 3: O PERATION
Signalling
Insertion
Only channels assigned are displayed. If no channels are assigned, the display
reads NO CHANNELS AVAILABLE. The signalling option allows selection of
Clear Channel or Robbed Bit signalling for each DS0. Each DS0 is set to the Clear
Channel DISABLE mode. This setting should not be changed for raw data
channels. However, channels using Robbed Bit signalling must be specified to
enable proper handling of the signalling bits. T1-DTE channels must be set to
THRU to enable signalling.
Alarm
Thresholds
The unit can generate alarm conditions based on alarm thresholds set for periods
of 15 minutes (900 seconds). A field set to 0 causes the unit not to alarm on that
statistic. To effectively disable alarm reporting, set all fields to 0.
DTE OOFS: Sets the DTE out of frame seconds threshold. The default value is 0
(disabled).
DTE Port
Configuration
Defaults are shown underlined.
The DTE Port Configuration display (Figure 3-11) sets the operating parameters
for each of the high-speed ports. The unit does not allow conflicting configurations
for the DTE ports. Therefore, the selections for each menu item are restricted to
those that do not conflict with the configuration of other high-speed ports or the
T1 DTE Port. The default is all ports disabled.
When channel assignment changes are made to the high-speed ports, the remote
communication link, or the T1 DTE, the unit reestablishes the mapping of all
channels. This interruption to traffic normally results in a brief burst of data errors
on other ports.
✍
Port
Rate
Multiplier
Port
Rate
Starting
Channel
Number
DS0
Channel
Assign.
Port
Transmit
Clock
Invert
Data
CTS
Control
DSR
Control
DCD
Control
N
×
56K
N × 64K
Disable
Selects
the N
multiplier
for
Port Rate
Multiplier
(0 - 24).
Channel 1
Channel 2
Channel 24
Contiguous
Alternate
Internal
External
Over-
sampled
No
Yes
Internal
Force
True
Force
False
Internal
Force
True
Force
False
Internal
Force
True
Force
False
V.54
Loop
Enable
Disable
Slot X Port Y Config Menu
Alarm on
DTR Loss
Disable
Enable
Ch. 1
Ch. 24
Figure 3-10 DTE Port Configuration Menu
DTE Port Configuration
Port Rate ... 64K
×
24=1536 kHz <
Figure 3-11 DTE Port Configuration Screen