Verilink PRISM 3111 (34-00242) Product Manual - Manual (Page 68)

60 C HAPTER 4: T ERMINAL I NTERFACE
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.
Network - Timing is derived from the network recovered clock (most applications
use this selection).
T1 DTE - The unit synchronizes the clock recovered from the DSX-1 T1 DTE
port.
Remote Comm Channel
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 (FDL), test conditions such as a remote network LLB
or PLB or a local network LLB will interrupt access to the far end unit.
If a T1 DTE option is not installed, the T1 DTE Framing, T1 DTE Line Code, T1 DTE
DSX Level, T1 DTE Channel, Setting, and Signalling fields are not displayed on the
interface screen.
T1 DTE Framing
Selects the type of framing for the T1 DTE side of the element. The unit will
support ESF to D4 or D4 to ESF conversions. The choices are ESF or D4.
T1 DTE Line Code
Sets the network side line coding as either AMI or B8ZS.
T1 DTE DSX Level
Specifies the DTE line build-out signal level as either 0-110 ft, 111-220 ft,
221-330 ft, 331-440 ft, 441-550 ft, 551-660 ft or >660 ft.
T1 DTE Channel
Selects channels to be manipulated by the Setting and Signalling fields from 1
through 24.
Settings
Sets the selected T1 DTE channel as either IDLE or THRU.
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