The Sincerity Follows The Quality
●calling line identification
●message light (special for Xi series）
●One way monitoring
●up to 5000 groups of accounts
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●one-touch redial function
●interactive teleconference
●Broadcasting
●networking function (Xi)
●function extension grade
●different ring between interior and exterior line
●Control Key (Key-Controlled function phone)
●automatic or manual on/off duty time switching
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