Verilink PRISM 3000 (34-00184) Product Manual - Manual (Page 38)

PRISM 3000 4-10 Terminal Operation
This screen has the following fields, most of which have
user selectable options. To send the new line configuration
to the unit, either press on one of the fields, change
the ‘Element’ selection, or exit the screen.
T1 -NET Framing: Selects the type of framing for the net-
work side of the element. The choices are [
ESF ] and [ D4 ].
T1 -NET Line Code: Sets the network side line coding.
The choices are [
AMI ] and [ B8ZS ].
T1 -NET LBO: Sets the line build out for the network
interface. The choices are [
0 dB ], [ -7.5 dB ], [ -15 dB ],
and [ -22.5 dB ].
PRM Enable: This field allows the T1.403 Performance
Report Message, which is sent once a second, to be turned
on or off. The choices are
[ENABLE] and [DISABLE] .
Zero Suppression: This field determines whether ones
density insertion is activated after 15 zeros (rather than 175
zeros). The choices are
[ENABLE] and [DISABLE] .
T1 -NET Timing: Sets the timing source to synchronize
the PRISM’s internal timing generators. In all cases, slips
are controlled to occur on frame boundaries at the network
and /or DSX1 ports when timing synchronization is lost.
NETWORK: Timing is derived from the network recov-
ered clock (most applications use this selection).
STATION: Timing is derived from a bipolar or TTL com-
patible clock supplied to the unit via the rear panel ‘
STA
CLK ’ connector. When this mode is selected, the timing
rate must also be set from ‘ Station Timing ’.
INTERNAL: The unit’s internal frequency standard is
used for all timing.
T1 DTE: The unit synchronizes to the clock recovered
from the DSX1 T1 DTE port. This selection only appears
on units equipped with the T1 DTE option.
PORT 1, 2, 3, or 4: Timing is synchronized to the exter-
nal terminal timing clock supplied from the DTE and con-
nected to the selected port.
Station Timing: Selects the input timing and only appears
when ‘
Station ’ is selected from the ‘ T1- NET Timing ’
menu. The choices are ‘ N x 56 K ’, ‘ N x 64 K ’, and ‘ 1.544
MHz ’. A number appears to the right of this field when
‘ Nx 56 K ’ or ‘ N x 64 K ’ is selected to indicate the rate multi-
plier. A value from ‘ 1 ’ through ‘ 24 ’ must be entered.
Remote Comm Channel: This field selects a communica-
tion link to the far end unit. If ‘
0 ’ is selected, communica-
tion is established over the ESF facility data link (valid only
when the network interface is configured for ESF and the
FDL has end-to-end integrity). For example, the entire T1
bandwidth must be available to the user with no intervening
multiplexors in the signal path blocking the FDL.
As an alternative, the communication link may be assigned
to an unused idle channel. This option may be used whether
the network is operating in D4 or ESF modes.
When the remote communication is programmed to operate
over a spare network channel, the following test conditions
will interrupt access to the far end unit:
• A remote network LLB or PLB is initiated.
• A local network LLB is initiated.
When the remote communication is programmed to operate
over the facility data link (FDL), the following test condi-
tions will interrupt access to the far end unit:
• A remote network LLB is initiated.
• A local LLB is activated on the near end.
NOTE: If far end communication is interrupted for any
reason while accessing the remote unit, the user should
3000 DSU x.xx/x.xx PRISM 3000 Date: MM/DD/YY
No Far End Response Topeka: (205) Time: HH:MM:SS
----------------------------- ALARM CONFIGURATION ------------------------------
Element: [NEAR]
Errored Seconds (ES): ( 45) Remote Alarm Seconds (RAS): ( 0)
Severely Errored Seconds (SES): ( 5) AIS Seconds (AISS): ( 0)
Loss of Signal Seconds (LOSS): ( 5) Out of Frame Seconds (OOFS): ( 5)
Unavailable Seconds (UAS): ( 0) BPV Seconds (BPVS): ( 0)
DTE LOS/LOF Seconds (LOSS): ( 0) Alarm Reset Timer (seconds): ( 30)
Screen 4-7 Alarm Parameters