Product manual

Product Manual - DM991 Series V Family - 204.4092.08 23
DB25 M34 DB25†
ISO 2110
Amd. 1
ISO 2593
Telebrás
pinout
101 Protection ground P. Gnd 1 A 1
102 Signal ground S. Gnd 7 B 13
TDa 2 P 2
TDb 14 S 15
RDa 3 R 4
RDb 16 T 17
105 Request to send RTS 4 C 5 DM991
106 Ready to send CTS 5 D 7 DM991
107 Modem ready DSR 6 E 9 DM991
108 Terminal ready DTR 20 H 14 DTE
109‡ G.SHDSL interface synch DCD 8 F 10 DM991
XTCa 24 U 11
XTCb 11 W 24
TCa 15 Y 3
TCb 12 a/AA 16
RCa 17 V 6
RCb 8 X 19
ERCa 22 * 23
ERCb 23 * 8
140 Digital Remote Loopback Request RDL 21 N 12 DTE
141 Local Analogue Loopback request LAL 18 L 21 DTE
142 Test indicator TST 25 n/NN 25 DM991
CT Function Signal
Signal
source
113 DTE transmission clock DTE
114 Transmission clock DM991
103 Transmitted data DTE
104 Received data DM991
115 Reception clock DM991
128 External reception clock DTE
Table 10. V.35 Interface Pinout
† For DM991S/SE only (or optionally for DM991C/CE).
‡ On DM991C V.35-V.36/V.11 interfaces, the CT109 signal presents the aggregate state (G.shdsl),
remaining off while it is in error condition (except when there is CRC error).
* For ISO2110 Amd. 1, the ERCa (22) and ERCb (23) pins do not correspond to the CT128.