Total Access 850 System Manual
Section 2 Engineering Guidelines
64203376L1-1B
© 2004 ADTRAN, Inc.
37
Nx56k/64k Port (J1)
The Total Access 850 system provides a single V.35 Winchester-style connection on the rear of the chassis
(as defined in Table 15).
Table 15. V.35 Winchester Pinout
Alarm Relay Connection (P5)
This connection alerts the user when a selected alarm condition exists. Alarm relay contacts are open
during normal operation. The alarm relay contacts close in the event of a local alarm condition or the
receipt of an alarm from the T1 carrier. In a carrier alarm condition such as a Red, Yellow, or Blue
(unframed all 1s), various alarm contacts in the PSU close. Carrier alarm conditions cause the
Total Access 850 to initiate trunk processing. The following chain of events then occur:
1.
MJ will be directly shorted to MJR.
2.
MJV will be directly shorted to MJVR.
Contacts MJ and MJR can be overridden manually during an alarm condition by pressing the ACO
pushbutton on the PSU faceplate. If the 3-Amp power fuse on the PSU trips, the -48ALM relay will close,
providing a -48 VDC signal on that pin. This alarm cannot be overridden by the ACO pushbutton. Refer to
Table 17 for alarm notifications.
Table 16 shows the pinout for the Alarm Relay connector.
Pin/CCIT
Description
Pin/CCIT
Description
A/101
Protective ground (PG)
V/115
RX clock (RC-A) to DTE
B/102
Signal ground (SG)
X/115
RX clock (RC-B) to DTE
C/105
Request to send (RTS) from DTE
P/103
Transmitted data (TD-A) from DTE
D/106
Clear to send (CTS) to DTE
S/103
Transmitted data (TD-B) to DTE
E/107
Data set ready (DSR) to DTE
Y/114
TX clock (TC-A) to DTE
E/109
Data carrier detect
AA/114
TX clock (TC-B) to DTE
H/—
Data terminal ready (DTR) from DTE
U/113
External TX clock (ETC-A) from DTE
J/—
Ring indicator (RI)
W/113
External TX clock (ETC-B) from DTE
R/104
Received data (RD-A) to DTE
NN/—
Test mode (TM) to DTE
T/104
Received data (RD-B) to DTE
Table 16. Alarm Relay Connector Pinout
Pin
Name
Description
1
-48 ALM
DC alarm output.
2
MJVR
Closes when a selected alarm condition is present.
3
MJV
Common connection between external circuitry and NC or NO terminal.
4
MJR
Major alarm audible common
5
MJ
Major alarm audible
Summary of Contents for Total Access 850
Page 14: ...Table of Contents Total Access 850 System Manual 14 2004 ADTRAN Inc 64203376L1 1B ...
Page 16: ...Section 1 System Description Total Access 850 System Manual 16 2004 ADTRAN Inc 64203376L1 1B ...
Page 22: ...Section 1 System Description Total Access 850 System Manual 22 2004 ADTRAN Inc 64203376L1 1B ...
Page 224: ...Section 5 DLP 4 Total Access 850 System Manual 224 2004 ADTRAN Inc 64203376L1 1B ...
Page 232: ...Section 5 DLP 6 Total Access 850 System Manual 232 2004 ADTRAN Inc 64203376L1 1B ...
Page 236: ...Section 5 DLP 7 Total Access 850 System Manual 236 2004 ADTRAN Inc 64203376L1 1B ...
Page 244: ...Section 5 DLP 10 Total Access 850 System Manual 244 2004 ADTRAN Inc 64203376L1 1B ...
Page 252: ...Section 5 DLP 13 Total Access 850 System Manual 252 2004 ADTRAN Inc 64203376L1 1B ...
Page 256: ...Section 5 DLP 14 Total Access 850 System Manual 256 2004 ADTRAN Inc 64203376L1 1B ...
Page 264: ...Section 5 DLP 16 Total Access 850 System Manual 264 2004 ADTRAN Inc 64203376L1 1B ...
Page 278: ...Section 6 ADTRAN Utilities Total Access 850 System Manual 278 2004 ADTRAN Inc 64203376L1 1B ...