Alcatel MainStreet 2902, Manual, Page: 74 / 344

7 — Connecting to data devices
7-6 2902 MainStreet Technical Practices
90-2906-01 May 2002
This interface adapter is used for external DCE and all DTE modes; internal and
slave DCE modes require the V.35 interface adapter (part number 90-1308-05). The
default mode is DCE.
The signal names in Table 7-5 are the names at the 2902 MainStreet system
connector. If a proprietary DB25-to-M34 cable is used, the pin and signal
assignments at the M34 end of the DB25-to-M34 cable may be different. See
section 7.3 for pin and signal assignments.
Table 7-5 V.35 (Type 2) personality module pin and signal assignment
(external DCE and DTE modes)
Pin number Signal name
(if 2902 MainStreet circuit is DCE) Signal name
(if 2902 MainStreet circuit is DTE)
1 SCT(B) nc
2 RXD(A) TXD(A)
3 SCR(B) XCLK(B)
4 DSR DTR
5 CTS ALB
6 XCLK(A) SCR(A)
7 TXD(B) RXD(B)
8 nc nc
9 DTR DSR
10 DCD RTS
11 RTS DCD
12 nc nc
13 nc nc
14 SCT(A) nc
15 RXD(B) TXD(B)
16 SCR(A) XCLK(A)
17 nc nc
18 nc nc
19 XCLK(B) SCR(B)
20 TXD(A) RXD(A)
21 nc nc
22 nc nc
23 nc nc
24 FGND FGND
25 SGND SGND