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OPERATION
NOTE
Do not enable Auto Framing for both CSUs on a link.
NET Frame
This sets the Network Frame Format option for the network side to AUTO
(Auto Framing), M A N (manually-set framing) or NONE (no framing),
and one of the following framing types: ESF (Extended Superframe
Format) or D4 (D4 Superframe Format). When AUTO is selected, DTE
Frame is also set to AUTO. Similarly, when M A N is selected, DTE
Frame is also set to M A N . When NONE is selected, enabling Unframed
Mode, DTE Frame is also set to NONE. (In Unframed Mode, some
Supervisory terminal screens and front panel LEDs are affected. The dif-
ferences are discussed with the affected items.) The default setting is
AUTO. When the CSU is configured as a slave CSU, this option cannot be
changed via the Supervisory terminal. (This option is also set via option
switches S5-1 and S5-3, and S4-7 when PMC-100 Operation is disabled.)
Ones Density
This sets the pulse density to MAX 15 ZEROS (maximum of 15 consecu-
tive zeros transmitted toward the network before a "one" is inserted),
MAX 39 ZEROS (maximum of 39 consecutive zeros), 8(N+1) RE-
STRICTIONS (minimum of N "ones" per 8(N+1) bits, where N = 1 to 24;
the Line Code option for the network side must be set to A M I ), MIN 1 IN
8 (minimum of 1 "one" per 8 bits; pulse density violations are not de-
tected with this selection), or INHIBIT (no minimum pulse density is
maintained). The default setting is MAX 15 ZEROS. (This option is also
set via option switch S5-8.) (In Unframed Mode, the MIN 1 IN 8 selection
does not apply and is removed from this function.)
Front Panel
This sets the Inhibit Front Panel Test Switches option to ENABLE (switch
usage is allowed) or INHIBIT (switch usage is inhibited). The default
setting is ENABLE. (This option is also set via option switch S6-7.)
Inband Loop
This sets the Inband Loopback Code Detection option to ENABLE (inband
loopback codes are detected and reacted to) or INHIBIT (inband loopback
codes are ignored). When ENABLE is selected, Test Type must also be
set. When a loopback activation or deactivation code is detected, the CSU
starts or stops the type of loopback test selected with Test Type. The default
setting is ENABLE. (This option is also set via option switch S6-8.)
Test Type
This sets the Inband Loopback Code Test Type option to LLB (DS1 Line
Loop is started or stopped when the appropriate inband loopback code is de-
tected) or TLB (DS1 Test Loop is started or stopped), when Inband Loop is
set to ENABLE. The default setting is LLB. (This option is also set via op-
tion switch S5-6.)
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