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T1, E1, and Digital Voice Modules Passport 4400 Hardware Installation Manual
5-9
Data Port Strapping
Two data port connectors are located on both the T1 and the E1 access modules.
The ports can be strapped for RS-232/V.24, V.35 or X.21 physical interface. Each
connector is strapped by using two headers with jumpers located on the access
modules.
Note:
Data ports can provide clocks up to 512 Kb/s. However,
RS-232/V.24 strapped data ports are not recommended for
speeds over 64 Kb/s.
Figure 5-10. Data Port Strapping for T1 and E1 Voice Modules
Warning:
!
Make sure that power is disconnected from the unit that houses
the access module before attempting to change the data port
jumper headers.
DP1
DP2
X.21
V.35
RS-232
X.21
RS-232
DP2
Show
n S
trappe
d f
o
r R
S-232
V.35
Bot
h h
eaders
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t be
strappe
d t
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sam
e w
ay
DP1
Show
n S
trappe
d f
o
r V
.35
X.21
RS-232
X.21
RS-232
V.35
Bot
h h
eaders
mus
t be
strappe
d t
he
sam
e w
ay
V.35