Interworking Call Hold

The device supports the interworking of call hold / retrieve requests between SIP entities supporting different call hold capabilities:

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Interworking SDP call hold formats. This is configured by the IP Profile parameter, 'SBC Remote Hold Format'.

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Interworking the play of the held tone for IP entities that cannot play held tones locally. This is configured by the IP Profile parameter, 'Play Held Tone'.

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Interworking generation of held tone where the device generates the tone to the held party instead of the call hold initiator. This is configured by the IP Profile parameter, 'SBC Reliable Held Tone Source'.

To configure IP Profiles, see Configuring IP Profiles.