Poor telephone line quality can hamper transmission speed even further, and some older lines cannot handle 56K at all.

质量差的电话线还会进一步降低传输速度，有些较陈旧的线路根本不能处理56k。

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IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.

引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。

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Because the Telephone Bureau will charge us for the use of the line even if quality of the fax is poor.

即使传真的质量很差，电话局也要向我们收取电话费。

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The findings are based on questions about health-related quality of life in government telephone surveys.

VOA: special.2010.01.13

The two areas in which the most hand waving has been done are the ability to provide a quality telephone product over the best-effort Internet and the possibility that providing telephone service over IP might be economically feasible.

CNN: IP telephony is the "in" thing these days, but should it be?

Users download the free application off the Web, but instead of typing a text message, they use a headset, telephone or microphone and speakers to make a high-quality, two-way voice call to anyone else running the application.

FORBES: Skype Proves Anyone Can Sell Phone Service

Vinho verde producers were also famous for forcing their vines to grow high off the ground, allowing more grapes to grow at the expense of the quality, using anything from trees to fences to telephone poles.

BBC: Portugal��s anti-port