You are required to advise the credit issuing office by telecommunication upon drawing under this Standby Letter of credit.

要求你，一旦在此备用信用证项下提款时，应以电讯通知开证行。

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Founded in 1991, OPNET Technologies Co. , Ltd. (OPNET) specializes in designing, manufacturing and marketing telecommunication transmission products for access networks and inter-office networks.

荣群电讯股份有限公司创始于1991 年，公司目标为设计、制造及销售世界顶级的宽频多重服务接取网路及光纤传输系统，产品市场遍及全球。

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"The UK did not sign the revised International Telecommunication Regulations last week in Dubai, and has no intention of doing so in the future, " the Foreign Office said in an email.

BBC: Technology