As shown in the equation below, this is equivalent to the difference in the "relative transit time" for two packets: the relative transit time is the difference between a packet's RTP time-stamp and the receivers clock at the time of arrival, measured in the same units.

If Si is the RTP time-stamp from packet i, and Ri is the time of arrival in RTP time-stamp units for packet i, then for two packets i and j, D can be expressed as:

D(ij) = (Rj -Ri) -(Sj -Si) = (Rj -Sj) -(Ri -Si)

The interval jitter is calculated continuously as each data packet i is received from source SSRC-n, using this difference D for that packet and of the previous packet i-1in order of arrival (not necessarily in sequence), according to the formula:

J = J + ({D (i-l, i)} -J)/16

This value should only be set by your Network Administrator.

D. Display Jitter Delay

Displays the jitter delay value.

T. Set SLIC Control Mode

Displays the SLIC Control Mode Selection submenu, which contains the following commands to set the SLIC Control Mode:

A. AUTO Control Mode

B. MANUAL Control Mode

Select your choice.

Voice gateway applications, such as CopperCom or JetStream, will override the value set by this command.

U. Set Compander Mode (u-Law, a-Law)

Displays the Compander Mode Selection submenu, which contains the following commands to set the Compander mode:

U. u-Law Mode

A. a-Law Mode

Select your choice.

If you are not sure which mode to use, check with your telephone service provider. Normally, u-Law is used in North America and a-Law in Europe.

Avaya, Inc.

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Avaya 1600 manual Display Jitter Delay, Set Slic Control Mode, Set Compander Mode u-Law, a-Law, Law Mode