Verilink SCC 2020 (880-503268-001) Product Manual - Manual (Page 38)

Configuration
3-16 Verilink SCC 2020 User Manual
Far-End Management
You may be able to access the SCC module in a far-end node and,
through it, option any module in the node.
Requirements For far-end management to work, the following conditions must be
true:
• The SCC firmware revision must be 3.x or newer at both ends.
(A limited distribution release of version 2.06 will also work.)
• The TAC firmware in the SCC 2020 controlling the node must
be version 1.6 or newer. (TAC firmware revision is indicated in
the CSU configuration menu.)
• The user must login to the Craft interface (locally or via
Telnet) using the special password “800far”.
• The CSU module (SCC 2020 or TAC 2010 only) with the T1
connecting remote sites must have TAC firmware 1.6 or newer.
• The T1 circuit connecting the sites must use ESF framing.
• The ESF framing on the T1 circuit must be continuous from
end-to-end.
NOTE: Many T1 circuits, especially those handled by a long distance
carrier, pass through a Digital Access and Cross-connect
System (DACS). For far-end management to work on a T1
passing through a DACS, the DACS must map the Facilities
Data Link (FDL) portion of the ESF framing through to each
end. This option is usually not set by default in the DACS. Ask
your carrier if the T1 has FDL continuity.
Exceptions Far-end management will not work if any of the following are true:
• The T1 circuit uses D4 framing.
• The T1 circuit passes through a DACS which does not convey
ESF framing from end-to-end because FDL pass through is not
on. This condition is most often true for T1s which pass
through a DACS.
• The user fails to login using the special password “800far”.
• The T1 circuit connecting the two sites is terminated at either
end with any of the following modules:
• SCC 2130, TAC 2130, TAC 2130-S, or TAC 2130-T.
• Any other module which is not an SCC 2020 or a TAC 2010.