Physical Description - Nortel Enterprise 1000 Reference Manual

Physical description

Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
• DG2 or FDL yellow alarm methods
• card status and alarm indication with faceplate-mounted LEDs
• automatic alarm monitoring and handling
• Card-LAN for maintenance communications
• loopback capabilities for both near-end and far-end
• echo canceler interface
• integrated trunk access (both D-channel and in-band A/B signaling can
be mixed on the same PRI)
• faceplate monitor jacks for T-1 interface
• configurable D-channel data rate with 64 Kbps, 56 Kbps or
64 Kbps inverted.
• self-test
The DTI/PRI card uses a 9.5" by 12.5" multilayer printed circuit board with
buried power and ground layers. The clock controller and D-channel
daughterboards are fastened by standoffs and connectors. See Figure 47 on
page 136.
The NTAK09 DTI/PRI card has seven faceplate LEDs. The first five LEDs
are associated with the NTAK09 card. The remaining two LEDs are
associated with the clock controller and DCHI daughterboards.
The first five LEDs operate as follows:
• During system power up, the LEDs are on.
• When the self-test is in progress, the LEDs flash three times, then go into
their appropriate states, as shown in Table 29 on page 137.
NTAK09 1.5 Mb DTI/PRI card Page 135 of 236