Product manual

Product Manual - DM991 Series V Family - 204.4092.08 24
DB25 DB37 DB25†
ISO 2110
Amd. 1
ISO 4902
Telebrás
pinout
101 Protection ground P. Gnd 1 1 1
102 Signal ground S. Gnd 7 19 13
TDa 2 4 2
TDb 14 22 15
RDa 3 6 4
RDb 16 24 17
RTSa 4 7 5
RTSb 19 25 18
CTSa 5 9 7
CTSb 13 27 20
107 Modem ready DSR 6 11 9 DM991
108 Terminal ready DTR 20 12 14 DTE
DCDa 8 13 10
DCDb 10 31 22
XTCa 24 17 11
XTCb 11 35 24
TCa 15 5 3
TCb 12 23 16
RCa 17 8 6
RCb 9 26 19
ERCa 22 * 21
ERCb 23 * 25
140 Digital Remote Loopback Request RDL 21 14 23 DTE
141 Local Analogue Loopback request LAL 18 10 8 DTE
142 Test indicator TST 25 18 12 DM991
114 Transmission clock DM991
CT Function Signal
Signal
source
109‡ G.SHDSL interface synch DM991
113 DTE transmission clock DTE
105 Request to send DTE
106 Ready to send DM991
103 Transmitted data DTE
104 Received data DM991
115 Reception clock DM991
128 External reception clock DTE
Table 11. 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.