Yet industry observers caution that PBXs are prone to year 2000 complications.

工业界的观察家也提醒人们专用小交换机易受2000年复杂性伤害。

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Multiple location support including support for a wide variety of phone systems, PBXs, switches and gateways.

多个地点支持，包括支持多种不同的电话系统，交换机，交换机和网关。

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"Over the short term, we believe many customers are extending the life of their PBXs with software upgrades to call control in order to reduce budget outflows," Weckel added.

短期内，我们相信很多客户为了压缩预算，都在利用软件升级到呼叫控制，来延长PBX设备的生命周期。

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It evolved into a mishmash of businesses--network boxes for carriers, PBXs for offices, phones, semiconductors and Bell Labs.

FORBES: Wired and restless

In 1973 he cofounded Mitel, which pioneered electronic switching systems that allowed for operator-free PBXs and touch-tone phone sets.

FORBES: Celtic charm

Renert says Tello works with products from Cisco Systems and Avaya, makers of traditional private branch exchanges (PBXs), plus Digium, an open-source PBX software company.

FORBES: Magazine Article