RFL Electronics GARD 8000 - Figure 2-13. T1; E1 Drop and Insert and Terminal Pass Thru

Applications
GARD 8000 SYS RFL Electronics
May 1, 2013 2-20 973.334.3100
One common board is used for T1 or E1 communications. The choice of T1 or E1 is made on the
communications configuration web page. An RJ-48C or DB-15 can be used. The E1 communications
board is also available in a version with a BNC connector, jumper selectable to 50 or 75 ohms.
While T1 uses a bandwidth of 1.584 Mbps (24 x 64 kbps channels) and E1 uses 2.084 Mbps (30 x 64
kbps channels), the GARD 8000 System uses only up to 12 of these channels, following the n x 64
kbps C37.94 standard.
2.5.1.1 USING THE T1/E1 INTERFACE IN DROP AND INSERT AND PASS THRU
APPLICATIONS
T1/E1 Terminal
T1/E1 Drop and Insert
T1/E1 Drop and Insert
RS-449/X.21V.35
G.703
C37.94
Long-Haul
GARD Bus 1 and 2
GARD Bus 1 or
2
GARD Bus 1 or 2
T1/E1 Terminal
T1/E1
T1/E1
RS-449/X.21V.35
G.703
C37.94
Long-Haul
RS-449/X.21V.35
G.703
C37.94
Long-Haul
RS-449/X.21/V.35
G.703
C37.94
Long-Haul
Aux. Channel A
1
Aux. Channel A
Aux. Channel B
Aux. Channel B
1
(12 Channel limitation)
DATA PATHS
A to A
1
B to B
1
A
1
to B
1
Terminal - Pass Thru
RS-449/X.21/V.35
G.703
C37.94
Long-Haul
GARD Bus 1 or 2
Terminal
*T1/E1
RS-449/X.21/V.35
C37.94
Long-Haul
RS-449/X.21/V.35
G.703
C37.94
Long-Haul
Aux. Channel
N Channels
Aux. Channel
N Channels
Terminal
*Must be framed (channel framing enabled).
Baud rate > (N + 1) x 64k.
Baud rate must be the same at both terminals.
"N" Max. channels supported for T1/E1 is 12.
GARD Bus 1 or 2
The Auxiliary Channel Mode will only support a single timeslot
(64kbps channel)
Note:
Figure 2-13. T1/E1Drop and Insert and Terminal Pass Thru
2.5.2 RS-232 ASYNC