User's Manual

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are available only during a call, at the same time, call waiting, call
holding and other features must be supported by network. Please contact
your network operator.
Call waiting
If the network supports "Call Waiting" and you have activated it, you
will hear call waiting tone if you have another call when the line is
busy.
1> Press calling key to answer the call, the first call will be
automatically maintained. After connecting, please check the
reference "Keep/switch."