Motorola 68230 Operation Guide - Page 65

Adding or Replacing a DSU Daughtercard

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Procedure to Remove SIMMs Use the following procedure to remove SIMMs. Step Action 1 Disengage the locking tabs by pushing them outward and, at the same time, press against the side with the chips so the SIMM disengages from the locking tabs. 2 Lift out the SIMM. Adding or Replacing a DSU Daughtercard Overview This section describes how to add or replace the DSU daughtercard. The DSU daughtercard provides an RJ48S connector on Port 1 and comes installed from the factory if you ordered a daughtercard. It supports speeds of 56 kbps (synchronous), and does not support multipoint. DSU Functionality The DSU daughtercard functionality suits an extended range of 56 kbps point-topoint DDS1 interface for North American service that conforms to AT&T 62310 or ANSI T1E1.4/91-006. The DSU daughtercard is FCC Part 68 registered. The DSU normally uses external clocking derived from the network. Diagnostic loopbacks from the telephone company are supported; local diagnostics are activated from the CTP.

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Procedure to Remove SIMMs
Use the following procedure to remove SIMMs.
Step
Action
1
Disengage the locking tabs by pushing them outward and, at the same
time, press against the side with the chips so the SIMM disengages from
the locking tabs.
2
Lift out the SIMM.
Adding or Replacing a DSU Daughtercard
Overview
This section describes how to add or replace the DSU daughtercard.
The DSU daughtercard provides an RJ48S connector on Port 1 and comes
installed from the factory if you ordered a daughtercard. It supports speeds of 56
kbps (synchronous), and does not support multipoint.
DSU Functionality
The DSU daughtercard functionality suits an extended range of 56 kbps point-to-
point DDS1 interface for North American service that conforms to AT&T 62310
or ANSI T1E1.4/91-006.
The DSU daughtercard is FCC Part 68 registered.
The DSU normally uses external clocking derived from the network.
Diagnostic loopbacks from the telephone company are supported; local
diagnostics are activated from the CTP.