User's Manual

the sending unit resets the timer for sending the next Hello message. If the timeout for receiving
a Hello message is exceeded, the receiving unit resets the DMC.
Table 54: Timeout values for Hello messaging on page 334 shows the timeout values.
Table 54: Timeout values for Hello messaging
Item Time-out duration
Timeout for sending new Hello 15 seconds for BCU
16 seconds for CCU
Timeout for receiving a Hello message 40 seconds
The timeout values for sending differ for the BCU and the CCU to create an asynchronous
exchange of the Hello messages.
DS30 interface
Audit messages come from the PBX interface every few minutes for audit purposes.
You can
also view the audit messages using the SSD monitor on the PBX through LD 77.
Message examples
Figure 227: Error message example on page 335 shows typical messages that can be seen
during call processing on the DS30 and IPC link. This type of monitoring can impact call
processing on a busy site because all 32 channels are monitored together.
DMC8 debug port
334 DMC DECT Fundamentals August 2012
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