The Loop Emulation Sevice for Public Switch Telephone Network
It is a protocol that supports the delivery of POTS over the loop emulation service which helps to convey analog supervisory signaling states is commonly used by IWFs (interworking functions to support CCS ( Common Chanel Signalling). To avoid the signaling analog line states this protocol uses the simiar message set as the V5-PSTN (ETSI EN 300/324-1) thus covering the risk due to the variations seen in individual national implementation of analog POTS
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2 comments:
nice job! waiting for your new artical. .................................................................
果然是好文章 受益良多 感謝分享￣ 3￣............................................................
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