363-206-285
System Introduction
1-12 Issue 3 June 2001
— VT hairpin. Cross-connections are allowed between Function Unit A
to Function Unit C and Function Unit B to Function Unit C. Optical
extensions from Function Unit A slots are also allowed.
— Dual homing. Ring (0x1) low-speed interface cross-connections
between Main and Function Unit slots for dual homing applications
between DDM-2000 OC-3 Multiplexers and DDM-2000 FiberReach.
— Locked cross-connections. Ring (0x1) low-speed interface or VT
locked cross-connections between low-speed and high-speed time
slots, locking ring traffic onto a designated ring rotation. Used in
utility market applications.
â– New features:
— Additional X.25 switched virtual circuits. Nine virtual circuits can be
provisioned in any combination of switched and permanent virtual
circuits for connections to OSs.
— Centralized operations over X.25 link. DDM-2000 CIT commands
have equivalent TL1 commands. This allows centralized operations
of DDM-2000 systems via the TL1/X.25 link as an alternative to CIT
commands.
— New controllers. The new BBG8/BBG8B and BBG9 controller circuit
packs provide expanded memory and processing capacity needed
to support large networks. Feature enhancements available with the
new controllers include:
— Remote software download. Software can be downloaded
from a PC connected to a DDM-2000/
SLC
-2000 network
element to either the local or remote DDM-2000/
SLC
-2000
NE.
— Electronic provisioning. Provisionable parameters are set by
software, thus decreasing the need for DIP switches. CIT
baud rate is provisioned automatically via autobaud
detection.
— User-assigned RT miscellaneous discretes increased from
15 to 21.
— Upgrades to the new controllers can be done in service.
— Enhanced PM. Enhancements to DS1 and DS3 line and path PM to
further support tariff verification. Enhanced DS3 PM requires the
new BBG4B DS3 circuit pack.
— Enhanced security. General and reports-only users increased from
50 to 100. Lockout of nonpriviliged users and log of all login
attempts provided.
— Electrical facility loopbacks. DS3, and EC-1 equipment loopbacks of
the incoming low-speed signal back towards the DSX.
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