Verilink PRISM 3111 (34-00242) Product Manual - Manual (Page 41)

Configuration 33
Ln Code
Sets the network interface line coding as either B8ZS and AMI.
LBO
Sets the line build out for the network interface as either 0, -7.5, -15, or -22.5 dB.
PRM
This field allows the T1.403 Performance Report Message, which is sent once a
second, to be disabled (Dis) or enabled (En).
Zero Sup
This field determines whether ones density insertion is activated after 15 zeros.
The selections are disabled (Dis) and enabled (En).
Timing
Sets the timing source to synchronize the unit’s internal timing generators. Slips
are controlled to occur on frame boundaries at the network and/or DSX1 ports
when timing synchronization is lost.
Net - Timing is derived from the network recovered clock (most applications use
this selection).
Internal - The unit’s internal frequency standard is used for all timing.
Port 1 - Timing is synchronized to the external terminal timing clock supplied from
the DTE and connected to the selected port. Verify that the external DTE clock is
operating at the data rate selected for Port 1.
T1 DTE - The unit synchronizes the clock recovered from the T1 DTE port.
Rem Comm
This field selects a communication link to the far end unit. You can either assign a
DS0 channel (1 through 24) or use an ESF facility data link (0). If ‘0’ is selected,
communication 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 or facility data link, test conditions such as a remote network LLB or PLB
or a local network LLB will interrupt access to the far end unit.
T1 DTE Params This menu establishes the necessary parameters for connection with the T1 DTE.