Siemens 300Series 사용자 설명서
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ROLMphone 300/600 Series User Guide
You can make a two-way speaker call to a DSS extension by pressing
the Two-Way Speaker Call (SPK2WAY) key and then pressing the
DSS key. (See “Direct Station Select (DSS)” on page 3-14.)
the Two-Way Speaker Call (SPK2WAY) key and then pressing the
DSS key. (See “Direct Station Select (DSS)” on page 3-14.)