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Position:Household Appliances
EM interface
EM interface the hardware interface with common switching equipment of a kind of phone. EM interface is interface of a kind of imitate, its information and continue letter make be departure. Cent is second line EM and 4 lines EM two...
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Labour firewood estate buys electric equipment 6 avoid
One avoid price " cheap "   thinks commonly, labour firewood estate because income is finite, the behoove when shopping buys the price in congener commodity inferior. A few businessmen also will a few cheap even antiquated commodity...
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IP telephone technology introduces
IP is current and popular technology. With a batch of new expressions of this photograph correlation, fax of phone of exchange of the network that be like IP, IP, IP, IP is waited a moment, also appear in succession. So, what is IP?...
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ADSL technology introduces
ADSL technology introduces: Asymmetrical road of digital user annulus (ADSL- - Asymmetric Digital Subscriber Loop) can be in existing cupreous double skeining thread, the rate of high speed be issued to lower levels that is as hig...
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XDSL classification
Introduction XDSL: In XDSL, "The technology of digital user line that X" is representing different sort. The different point of technologies of all sorts of digital user line, basically behave the transmission rate in signal and d...
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Introduction ISDN
ISDN (Integrated Service Digital Network) Chinese name is net of integrated business figure, common is called " a gleam of is connected " . At present telephone network is exchanged and relay basically had realized digitlization, name...
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The phone exchanges a principle
If have many users when, to make sure random can communicate between two users, very natural we can think of every two users use a pair of circuitry to rise repeatedly.   of <P Align=left><IMG Height=178 Src="/uploadfi...
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NO.7 letter makes
NO.7 believes your system is one kind internationally the general and public letter of standardization makes system, Its are basic the characteristic is: 1, suit to transmit the integrated number network that equipment place forms by...
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