Verilink DIU 2130 (880-503297-001) Product Manual - Manual (Page 55)

T1 Dial Backup Option Overview
Verilink 5-7
Figure 4 Cable Interconnect Schematic when the Backup Circuit is Activated
Detecting a
DIU 2130/DBU
Using the AM2000, you can detect the presence of a DIU 2130/DBU
(DIU 2130 with the T1 Dial Backup Option) by displaying the node
configuration from the Online Access/Display or the AS2000
Configuration menus.
Figure 5 Display Node Configuration Showing the DIU 2130/DBU Element
DIU 2 130/DBU
DTE
ConnecT
56K DSU
Port 1 Port 2
SD SD SD RD
SCTE SCTE SCTE SCR
RD RD SD RD
SCR SCR SCTE SCR
RLSD RLSD RTS RLSD
CTS CTS CTS CTS
RTS RTS RTS RLSD*
DSR DSR DTR DSR
DTR DTR DTR DSR
SCT SCT SCT SCT
•
TM TM TM TM
LL LL LL LL
RL RL RL RL
* RLSD is equivalent to Carrier
Detect (CD).
/ DBU
The letter B in the highlighted area indi cates the DIU2130/DBU.