Table 2-2. Pin Assignments For Primary Eia-232 Connector - ADTRAN DSU III ARdc User Manual

The V.35 connector is recommended for use with data rates above
19.2 kbps. The EIA-232 connector works up to 56 kbps with a low capac-
itance cable or with the external transmit clock option selected. The DTE
rate is configured from the front panel. The DTE can operate in asynchro-
nous or synchronous modes.
To prevent possible radio frequency interference emissions, a shielded cable is
required.

Table 2-2. Pin Assignments for Primary EIA-232 Connector

61200270L1-1
Pin EIA
1 AA Protective Ground (PG)
2 BA Transmit Data (TD)
3 BB Receive Data (RD)
4 CA Request to Send (RS)
5 CB Clear to Send (CS)
6 CC Data Set Ready (SR)
7 AB Signal Ground (SG)
8 CF Received Line Signal Detector (CD)
9 - +12 Test Point
10 - -12 Test Point
15 DB Transmit Clock (TC)
17 DD Receive Clock (RC)
18 - Local Loopback (LL)
20 CD Data Terminal Ready (TR)
21 - Remote Loopback (RL)
22 CE Ring Indicator (RI)
24 DA External TX Clock (ETC)
25 - Test Indicator (TI)
DSU III ARdc User Manual
Chapter 2. Installation
Description
2-3