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Display #
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All
Articles
Title
Hits
The phone line splitter
609
The phone lock pirate
611
The prefix for recording telephone conversations
518
The prefix for recording telephone conversations
506
The prefix to a telephone for coupled lines
534
The principle of operation caller ID
578
The principle of operation of telephone cards
497
The receiver-decoder signals DТМF
647
The repair of imported handsets
747
The repair of imported phone-tube
625
The scheme of connection of the modem to AVA
543
The speakerphone device for a loudspeaker handset
520
The system of registration and billing of outgoing calls
562
The telephone interface
633
The telephone interface
538
The time counter of telephone conversations
582
The time counter outgoing telephone calls
572
Three consoles to telephones
632
Three lock phone
783
Three options improvised Anti-ANI
747
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