AT commands: Detailed description
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devolo MicroLink ISDN i
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S154/S155 Error codes
In the event of errors (no connection established or aborted connections), the
contents of the registers S154 and S155 return error codes which may be
used to localize the problem. These registers can be read only. A list of error
messages may be found in the appendix “Error Messages”.
S156 Receiving packet retransmissions on
D-channel
Register S156 contains the number of incorrectly received data packets in the
signaling channel (D channel) for every 250 data packets. This register can
be read only. The contents of this register can only be reset by switching the
adapter off and back on.
2 0 0 No display of the EAZ/MSN selected by the
remote station
4 1 With bit 0 and/or bit 1=1, the selected EAZ/MSN
is displayed
3..5 0 Reserved
6 0 0 No display of the messages: ALERTING,
CALL SENT, CONNECTING
64 1 Display of the messages: CONNECTING, ALERT-
ING, CALL SENT
7 0 0 Cause of the aborted connection is not dis-
played
128 1 Cause of the aborted connection displayed by
S154/S155 after NO CARRIER
Bit Dec. Description
Valid values 0 to 255 1/250 data packets
Default value 0
Store in nonvolatile memory No
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