G.SHDSL NTU User Manual V0.03
140
The pin out of DB-15 connector on X.25 adaptor cable:
Pin
Signal
Abbr.
DTE
DCE
1
Shield
2
Transmit (A)
TA
Out
In
3
Control (A)
CA
Out
In
4
Receive (A)
RA
In
Out
5
Indication (A)
IA
In
Out
6
Signal Timing (A)
SA
In
Out
7
Unassigned
8
Ground
9
Transmit (B)
TB
Out
In
10
Control (B)
CB
Out
In
11
Receive (B)
RB
In
Out
12
Indication (B)
IB
In
Out
13
Signal Timing (B)
SB
In
Out
14
Unassigned
15
Unassigned
Functional Description:
The Signal Element Timing (clock)
(S)
is provided by the DCE. This means that the NTU is output the correct
clocking and that X.21 is a synchronous interface. Hardware handshaking is done by the Control
(C)
and
Indication
( I )
lines. The Control is used by the DTE and the Indication is the DCE one.
Summary of Contents for G.SHDSL NTU
Page 1: ...G SHDSL NTU User Manual Version 0 03...
Page 9: ...G SHDSL NTU User Manual V0 03 8 1 4 Applications...
Page 30: ...G SHDSL NTU User Manual V0 03 29 E1 Interface...
Page 52: ...G SHDSL NTU User Manual V0 03 51...
Page 55: ...G SHDSL NTU User Manual V0 03 54...
Page 117: ...G SHDSL NTU User Manual V0 03 116 For E1 and Ethernet interface model...
Page 119: ...G SHDSL NTU User Manual V0 03 118 For Serial interface model For Ethernet interface model...
