Paradyne HOTWIRE 7925 User manual

TM
1
7925-A2-GK40-10 September 1997
HotWire 7925-A1 E1 HDSL Standalone Termination Unit
Errata
Document Number 7925-A2-GK40-10
September 1997
Errors and exclusions in the User’s Guide (Document No. 7925-A2-GB20-30) were detected after
printing. Please make note of the following corrections.
The following information should be included on page 1-1: Up to ten standalone units may be installed in
an optional HotWire 7900 10-slot Standalone Shelf, using a single power source. (The Standalone Shelf
is required for the –48 Vdc standalone model.)
The defaults shown on page A-2 are Terminal mode factory defaults. Switchpack mode defaults are
shown in this document.
Use the following illustration rather than the one on page C-2:
97-15266-0
3
P11
Switchpack S1 VT100 Terminal
Modular Jack
Jumper P11
S1
HDSL Line Jack
P3
C31
C33
Position
1
2
3
4
5
6, 7
8
Settings*
OFF = CP
ON = CO
OFF = AMI line
encoding
ON = HDB3 line
encoding
OFF = Loops A and B
ON = Loop A
Must be OFF when
in Switchpack Mode
OFF = 75 ohm line
build-out
ON = 120 ohm line
build-out
Must be OFF when
in Switchpack Mode
OFF = Unframed
ON = Framed
Pins*
1-2
2-3
Settings*
Terminal Mode
Switchpack Mode
Jumpers C31, C33
Pins*
1-2
2-3
Settings*
75 ohm line
build-out
120 ohm line
build-out
* Default in bold
P6
P7
Jumpers P6, P7
Pins*
1-2
2-3
Settings*
120 ohm line
build-out
75 ohm line
build-out
678
ON
12345
123 123
P10
P1
12
123
P9
P8 P12
123
123
321
321
321
321
123
Figure C-1. G.703-Compatible Unit Switchpack and Jumper Locations

2 7925-A2-GK40-10
September 1997
Use the following illustration rather than the one on page C-4:
97-15265-0
4
S1
S2
P8
V.35
Switchpack S1 Switchpack S2
Jumper P8
VT100 Terminal
Modular Jack
HDSL Line Jack
P5
Position
1
2
3
4, 5
6, 7, 8
Settings*
OFF = CP
ON = CO
OFF = Loops A and B
ON = Loop A
unused
00 or 11 = Internal
Clock
01 = External Clock
10 = Loop Clock
unused
Position
1
2
3
4
5
6
7
8
Settings*
ON = 64 kbps
ON = 128 kbps
ON = 192 kbps
ON = 256 kbps
ON = 384 kbps
ON = 512 kbps
ON = 768 kbps
ON = 1024 kbps
All ON = 64 kbps
All OFF = 2048 kbps
Pins*
1-2
2-3
Settings*
Terminal Mode
Switchpack Mode
* Default in bold
678
ON
12345 678
ON
12345
P4
P1 P2
123
123 321
12
123
P10 P11
P9
123
123
321
Figure C-2. V.35-Compatible Unit Switchpack and Jumper Locations

*7925–A2–GK40–10*