Table 7-3. Ntwk Mgmt (X.25) Connector Pin Assignments; Procedure - ADTRAN MX2820 System Manual

MX2820 System Manual

PROCEDURE

1. Connect the DB-25 data cable male connector to the female connector labeled
on the MX2820 backplane.
agement port.

Table 7-3. NTWK MGMT (X.25) Connector Pin Assignments

The MX2820 supports an RS-232 compatible serial interface to be used in conjunction
with the X.25 network. The unit includes PAD functions onboard, so an external PAD is
not required for operation with the X.25 network. Physical access uses a 25-pin female
DB-25 connector. This port operates as a DTE and is configured for the following settings:
• 1-way in or 2-way operation
• Up to four SVCs
• Up to 64 kbps (synchronous)
• Packet size: 128 bytes
• Packet window: 2
• n2 retry limit: 3
• T1 ACK timer: 20 seconds
• T3 time out: 3 seconds
• k window size: 2
2. Connect the other end of the DB-25 data cable to the designated port of the X.25
equipment.
7-76
Table 7-3
Pin Number
1
2 Transmit Data (TD) from DTE
3 Received Data (RD) into DTE
4
5
6
7
8
15
17
20
22
24
provides the pin assignments for the Network Man-
Function
Frame Ground (FG)
Request To Send (RTS)
Clear To Send (CTS)
Data Set Ready (DSR)
Signal Ground (SG)
Data Carrier Detect (DCD)
Transmit Clock (TC)
Receive Clock (RC)
Data Terminal Ready (DTR)
Ring Indicator (RI)
External Clock (EXC)
NTWK MGMT
61186003L1-1D