Nx56K/64K Port (J1); Alarm Relay Connection (P5); Table 15. V.35 Winchester Pinout; Table 16. Alarm Relay Connector Pinout - ADTRAN Total Access 850 System Manual

Total Access 850 System Manual

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).
Pin/CCIT
A/101 Protective ground (PG)
B/102 Signal ground (SG)
C/105 Request to send (RTS) from DTE
D/106 Clear to send (CTS) to DTE
E/107 Data set ready (DSR) to DTE
E/109 Data carrier detect
H/— Data terminal ready (DTR) from DTE
J/— Ring indicator (RI)
R/104 Received data (RD-A) to DTE
T/104 Received data (RD-B) to DTE

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 Name
1 -48 ALM
2 MJVR
3 MJV
4 MJR
5 MJ
64203376L1-1B

Table 15. V.35 Winchester Pinout

Description

Table 16. Alarm Relay Connector Pinout

DC alarm output.
Closes when a selected alarm condition is present.
Common connection between external circuitry and NC or NO terminal.
Major alarm audible common
Major alarm audible
© 2004 ADTRAN, Inc.
Section 2 Engineering Guidelines
Pin/CCIT
V/115 RX clock (RC-A) to DTE
X/115 RX clock (RC-B) to DTE
P/103 Transmitted data (TD-A) from DTE
S/103 Transmitted data (TD-B) to DTE
Y/114 TX clock (TC-A) to DTE
AA/114 TX clock (TC-B) to DTE
U/113 External TX clock (ETC-A) from DTE
W/113 External TX clock (ETC-B) from DTE
NN/— Test mode (TM) to DTE
Description
Description
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