The processing of data loss of Bh-01ⅱ type switch

A switch in the normal operation of the internal call to listen to the busy or wrong number of the phenomenon. After inspection, the dial tone of each extension normal, and then check the switch cabinet Power Plate panel, found that data loss warning lights ALM lights. It is concluded that the above fault phenomenon is caused by data loss due to the failure of the data stored on the CPU board or bad contact.

Shut down the battery and turn it back on. Through the *0812 instruction into the system programming state, to the system for various functions, such as: extension dialing, dialing level, elastic code. Then hangs the machine to exit the programming state, the wrong number phenomenon eliminates, but is called the idle to listen the busy signal the phenomenon to still exist.

Once again into the system programming, with the 24# instructions to display the extension number, found that the number has the same. The reason for the analysis is that when the switch is open, in order to facilitate administration, the device number to be used for the switch (for maintenance convenience, usually one by one using the user device port) according to the department order or the room number of the elastic code, to the temporary use of the device number is also fully elastic code into the unused number area, In the case of the above fault handling, the unused device number is not used for elastic code processing, the number of flexible numbers is the same as the unused device number (for example, the device number is 2001, the elastic code is 2101 and the following unused device number 2101 is the same), so that the CPU is not recognized, causing the call idle and listen to the busy signal.

The solution is: into the system after programming, with the extension of the block to set the elastic code of the instruction 24* number) * (START) * (end) #, the unused device number is all flexibly encoded into the unused number area. After the hanging machine quit programming, listen to the busy signal troubleshooting.

Handle the above error number and busy signal after the failure of the switch, after running for a period of time, the user reflects the dial outside sometimes a long time to hear less than two times the tone. Observed on the display stage, all out of the relay light long, and then dial an outside line can be seen into the relay light, but not hear two times dial tone.

Analysis of the reason is: the trunk of the switch is divided into the relay and into the relay, data loss, the restoration of data does not have a continuous selection of relay restrictions, resulting in a full relay busy, and then dial an outside line when the re-election to the relay to hear less than two times dial tone.

After entering the programming state, the 47* (first into the relay number) # instruction is used to restrict the relay re-election, the above symptom disappears.