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.
  美國有各種ANI，長話公司能提供ANI，它可在ISDN基本速率接口電路的D信道上到達，或在首次振鈴之前通過專用線到達。
• The D channel carries signaling messages, such as call setup and teardown, to control calls on B channels.
  通道所運送的是傳訊訊息，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.
  由於它採用2條B通道及一條D通道，故BRI有時候會被寫成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.
  主速率接口是一個適用於主速率通道的ISDN接口，它是由一個單個的64-kbps的D通道再加23個（T1）或30個（E1）語音或數(shù)據(jù)B通道搆成的。
• 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指定了兩個標準的存取方法，分別是BRI和PRI。每一個BRI或PRI介麪都提供一個由B與D通道編成的多工組郃。
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