VOIP transmitter and receiver devices and methods therefor

A Voice Over Internet Protocol (VOIP) transmitter device, comprising:

• a transmission buffer that buffers a plurality of packets, the transmission buffer having a transmission buffer delay;
• means for receiving a sequence of packets that encode a speech utterance using VOIP;
• and
• a transmitter that transmits an initial buffer delay value along with a first packet in the sequence of packets that encode the speech utterance over a wireless CDMA network.

A method of operating a Voice Over Internet Protocol (VOIP) transmitter device, comprising:

• buffering a plurality of packets in a transmission buffer, the transmission buffer having a transmission buffer delay;
• receiving a sequence of packets that encode a speech utterance using VOIP;
• and
• transmitting an initial buffer delay value along with a first packet in the sequence of packets that encode the speech utterance over a wireless network.

A Voice Over Internet Protocol (VOIP) receiver device, comprising:

• a receiver that receives a sequence of voice packets representing a speech utterance transmitted over a VOIP wireless interface;
• a receive packet buffer that buffers the received sequence of voice packets after receipt and before playback of reconstructed speech;
• means for reading an initial transmission buffer delay of a first packet in the sequence of packets representing the speech utterance;
• and
• means for setting a prescribed amount of delay in said receive packet buffer based upon the initial transmission buffer delay so that the initial transmission buffer delay+initial receive buffer delay=a predetermined total delay.

A Voice Over Internet Protocol (VOIP) receiver device, comprising:

• a receiver that receives a sequence of voice packets representing a speech utterance transmitted over a VOIP wireless interface;
• a receive packet buffer that buffers the received sequence of voice packets after receipt and before playback of reconstructed speech;
• means for reading an initial receive buffer delay of a first packet in the sequence of packets representing the speech utterance;
• and
• means for setting a prescribed amount of delay in said receive packet buffer=the initial receive buffer delay.

A Voice Over Internet Protocol (VOIP) receiver device, comprising:

• a receiver that receives a sequence of voice packets representing a speech utterance transmitted over a VOIP wireless interface;
• a receive packet buffer that buffers the received sequence of voice packets after receipt and before playback of reconstructed speech;
• means for reading an absolute time stamp of a first packet in the sequence of packets representing the speech utterance;
• and
• means for setting a prescribed amount of delay in said receive packet buffer derived from the absolute time stamp and a synchronized time reference

A method of operating a Voice Over Internet Protocol (VOIP) receiver device, comprising:

• receiving a sequence of voice packets representing a speech utterance transmitted over a VOIP wireless interface;
• buffering the received sequence of voice packets after receipt and before playback of reconstructed speech;
• determining an initial receive buffer delay for the sequence of packets representing the speech utterance;
• and
• setting the initial receive buffer delay.