Black Box MWU2000-X21 - Manual (Page 111)

111
2.048Mbps Wireless Modem
TECHNICAL: 0118 931 2233
DCE Options
1. DCE, internal clock - Supported by V.35, RS-530 and X.21.
Jumper configuration:
Figure A-5. DCE, Internal Clock Jumpers
2. DCE, external clock - Supported by V.35 and RS-530.
Jumper configuration:
Figure A-6. DCE, External Clock Jumpers