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KR910009669B1
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Apparatus for eliminating jitter noise of telecommunication system
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KR910005499B1
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Apparatus for interfacing channels between isdn exchanger and subscribers
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KR910005498B1
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Apparatus for multiplexing isdn subscribers
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KR910005530B1
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Apparatus for generating sychronous and system clock pulses for digital signal converter
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KR910005500B1
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Apparatus for synchronizing isdn subscribers
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KR910005502B1
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Apparatus for interface between isdn exchanger and subscribers
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KR910005496B1
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Apparatus for common channel control of isdn subscribers
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KR910005501B1
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Apparatus for controlling common channel for multiflexing subscribers of isdn
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KR910005497B1
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Apparatus for interface between isdn exchanger and remote subscribers
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KR910005494B1
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Time switching device for both of transmission having a-law & my-law
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KR910005495B1
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Method and apparatus for deciding synchronizing/asynchronizing mode of data transmission
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KR910005489B1
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Apparatus for signal transformation between systems having different chanels in a frame
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KR910005488B1
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Apparatus for converting a-law to u-law in pcm multiflexing system
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KR910005493B1
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Apparatus for reframe synchronous multiplexer
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KR910005492B1
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Clock puleses selection circuit
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KR910005490B1
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Phase synchronizing circuit for receiving counter of synchronizing transmission system
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KR910005491B1
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Apparatus for interface of isdn narrow-banded subscribers
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