RFL SMX3 / 21
Page 9 of 22
Issue 1.4
User Manual
08 June 2009
Standard Concatenation Port Pin-out (DTE configuration)
as used for Aggregate Concatenation - D15F on chassis
Circuit
Pin A
Pin B
Direction
Notes
T Transmit
Data
2
9 Output
R Receive
Data
4
11 Input
S Signal
Element
Timing
6
13
Input
Timing signal derived from the
network
G Ground
8
15
X Signal
Element
Timing
7
14
Output
Timing signal derived from the
port and transmitted to network.
C Control
3
10
Output
Permanently on. Not used in
Aggregate Concatenation
I Indication
5
12
Input
Signal ignored. Not used in
Aggregate Concatenation
Screen / Drain
Must be earthed to shell
Aggregate Concatenation to a co-located SMX3/21 requires a five twisted pair cross-
over cable with overall shield (eg RS 111-8988). Maximum recommended length
10m (check Utility standards).
Aggregate Concatenation Cable
D15M – D15M
Pair
Pin
End 1
End 2
A 2
4
1
B 9 11
A 4
2
2
B 11
9
A 6
7
3
B 13 14
A 7
6
4
B 14 13
A 8
8
5
B 15 15
Screen / Drain
Must be earthed to
connector shells at
both ends
The following table is for information only, and is not used in any standard configurations.
Optional Concatenation Port Pin-out (when in DCE configuration) – D15F on chassis
Circuit
Pin A
Pin B
Direction
Notes
T Transmit
Data
2
9 Input
R Receive
Data
4 11 Output
C Control
3 10 Input
Signal
ignored
I Indication
5 12
Output Permanently
on
S Signal
Element
Timing
6
13
Output
Timing signal derived from
the port and transmitted to
network
G Ground
8 15
Screen / Drain
Must be earthed to shell
