Verilink PRISM 3002 (34-00277) Product Manual - Manual (Page 38)

4-16 T ERMINAL C ONFIGURATION AND T ESTING
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.
NETWORK. Timing is derived from the network recovered clock (most applications
use this selection).
Remote Comm Channel
This field selects a communication link to the far-end unit. Either a DS0 channel
(1 through 24) or use an ESF facility data link (0) can be assigned. If 0 is selected,
communication is established over the ESF facility data link (this is 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 multiplexers 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, test conditions such as a remote network LLB or PLB or a local network
LLB interrupt access to the far-end unit.
When the remote communication is programmed to operate over the facility data
link (FDL), test conditions such as a remote network LLB or a local LLB on the
near end interrupt access to the far-end unit.
If far-end communication is interrupted for any reason while accessing the remote unit, exit
and then re-enter this screen to ensure that all the parameters have been updated.
Channel Allocation
This display-only field indicates the network channel assignments with Channel 1
on the left and Channel 24 on the right. Channels assigned to a port are identified
with a port number (1). Non-assigned idle channels are marked with a hyphen (-).
Remote communication channels are marked with an R.