D-channel

常見例句

• Traffic over the D channel employs the Link Access Procedure on the D Channel (LAPD) protocol.
  在D通道上的流量須應(yīng)用在D通道上的鏈路存取程序(LAPD)之協(xié)定。
• A long distance phone company can provide ANI which may arrive over the D channel of an ISDN primary rate interface circuit or via a dedicated single line before the first ring.
  美國(guó)有各種ANI，長(zhǎng)話公司能提供ANI，它可在ISDN基本速率接口電路的D信道上到達(dá)，或在首次振鈴之前通過專用線到達(dá)。
• The D channel carries signaling messages, such as call setup and teardown, to control calls on B channels.
  通道所運(yùn)送的是傳訊訊息，例如是用來控制B通道傳呼的呼叫建立與解除。
• Because it uses two B channels and one D channel, BRI is sometimes referred to as 2B+D.
  由于它采用2條B通道及一條D通道，故BRI有時(shí)候會(huì)被寫成2B+D。
• Primary Rate Interface (PRI) is an ISDN interface for primary rate access , which consists of a single 64-kbps D channel plus 23 (T1) or 30 (E1) B channels for voice or data.
  主速率接口是一個(gè)適用于主速率通道的ISDN接口，它是由一個(gè)單個(gè)的64-kbps的D通道再加23個(gè)（T1）或30個(gè)（E1）語音或數(shù)據(jù)B通道構(gòu)成的。
• ISDN specifies two standard access methods, BRI and PRI. A single BRI or PRI interface provides a multiplexed bundle of B and D channels.
  ISDN指定了兩個(gè)標(biāo)準(zhǔn)的存取方法，分別是BRI和PRI。每一個(gè)BRI或PRI介面都提供一個(gè)由B與D通道編成的多工組合。
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