Troubleshooting ActiveSync
Troubleshooting ActiveSync
ActiveSync on the host says that a device is trying to connect, but it cannot identify it
One or more control lines are not connected. This is usually a cable problem, but on a laptop or other device, it may indicate a
bad serial port.
If the MX3Plus is connected to a PC by a cable, disconnect the cable from the MX3Plus and reconnect it again.
Check that the correct connection is selected (Serial or USB “Client” if this is the initial ActiveSync installation).
See Also: “Cold Boot and Loss of Host Reconnection”.
ActiveSync indicator on the host (disc in the toolbar tray) turns green and spins as soon as you connect the cable, before
tapping the Connect icon (or REPLLOG.EXE in the Windows directory).
One or more control lines are tied together incorrectly. This is usually a cable problem, but on a laptop or other device, it may
indicate a bad serial port.
ActiveSync indicator on the host turns green and spins, but connection never occurs
Baud rate of connection is not supported or detected by host. Check that the correct connection is selected (Serial or USB
“Client” if this is the initial ActiveSync installation).
-or-
Incorrect or broken data lines in cable.
ActiveSync indicator on the host remains gray
The host doesn’t know you are trying to connect. May mean a bad cable, with no control lines connected, or an incompatible
baud rate. Try the connection again, with a known good cable.
Testing connection with a terminal emulator program, or a serial port monitor
You can use HyperTerminal or some other terminal emulator program to do a rough test of ActiveSync. Set the terminal
emulator to 8 bits, no parity, 1 stop bits, and the same baud rate as the connection on the CE device. After double-tapping
REPLLOG.EXE on the CE device, the word “CLIENT” appears on the display in ASCII format. When using a serial port
monitor, you see the host echo “CLIENT”, followed by “SERVER”. After this point, the data stream becomes straight (binary)
PPP.
Cold Boot and Loss of Host Re-connection
ActiveSync assigns a partnership between a client and a host computer. A partnership is defined by two objects – a unique
computer name and a random number generated when the partnership is first created. An ActiveSync partnership between a
unique client can be established to two hosts.
When the mobile device is cold booted, the random number is deleted – and the partnership with the last one of the two hosts is
also deleted. The host retains the random numbers and unique names of all devices having a partnership with it. Two clients
cannot have a partnership with the same host if they have the same name. (Control Panel | System | Device Name)
If the cold booted mobile device tries to reestablish the partnership with the same host PC, a new random number is generated
for the mobile device and ActiveSync will insist the unique name of the mobile device be changed. If the mobile device is
associated with a second host, changing the name will destroy that partnership as well. This can cause some confusion when
re-establishing partnerships with hosts.
E-EQ-MX3PLUSRG-J [ 51 ] MX3Plus Reference Guide
