SIP softphone - graphical client (transitional package)

 Linphone is an audio and video internet phone using the SIP protocol.
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 The main features of linphone are:
   - a nice graphical interface;
   - it includes a large variety of codecs with different quality / bandwidths;
   - it uses the well-known and standardised SIP protocol.
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 This is a transitional package. It can safely be removed.