Zhone IMACS 8000, User Manual

Page: 303 / 788

System Cards 9-3
WAN Card WAN Card Descriptions
Figure 9-2.801070 Strap Settings for T1, E1 and T1 CSU
The 801070 Dual WAN supports two interfaces, and the straps shown in Figure 9-2 detail the
different ports and respective jumpers. Port 1 on the interface is labelled as P1, and the
associated jumpers for setting parameters on the port are labelled as J10, J12 ad J13. The
second port on the 801070 card is identified as P2 in Figure 9-2, and the associated jumpers
for setting parameters on the port are labelled as J11, J14 and J15.
For T1 CSU mode, no straps are used. Each port should have all the straps removed in order
to provide the T1 CSU interface. For example, if P1 is desired to run as a T1 CSU interface,
then the straps as identified in Figure 9-2 should be removed from P1, J10, J12 and J13.
For T1 DSX mode, only the Port strap itself is used, and the strap on P1 should be placed on
pins 1 and 2, as identified in Figure 9-2. The straps on J10, J12 and J13 can be either be
between 2 and 3 (factory default) or removed.
For E1 CEPT mode, then all the respective straps for the port will be used. The port strap
should be placed across pins 3 and 4, and the respective parameter setting straps will be
utilized. For a 75 Ohm termination, parameter jumpers should be placed across pins 1 and 2.
For an E1 interface with 120 ohm impedance, then the straps should be placed across pins 2
and 3. In other words, if Port 1 is desired to be in E1 mode with a 120 Ohm termination, then
P1 should be strapped on pins 3 and 4, and J10, J12 and J13 should all be strapped on pins 2
and 3. These strapping options are summarized in Table 9-1 on page 9-4.
P1
P2
J13
J12
J10
J15
J14
J11
1
2 3
1 2 3
1 2 3
1 2 3
1 2 3
1
2 3
1 2
3 4
1 2
3 4