Call Waiting With Caller ID
Call waiting with “Caller ID” uses a special signal in order to warn you about an incoming call, during another call there are shown the name and number of the calling subscriber on the display. The function also allows switching between two calls.
Siemens Enterprise OpenStage 40 SIP IP-phone is a great solution for people working in the permanent place. This model features a large display and easy setup of various protocols such as TDM, HFA and SIP.
VOIP PI CO., LTD.
VOIP PI Co., Limited. is a one of the leading asterisk telephony card manufacturer in china, with passion in supplying open souce hardware.
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