AudioCodes MediaPack MP-201B, User Manual, Page: 85 / 270

Version 3.0.1 85 July 2010
MP-20x Telephone Adapter 8. Quality of Service (QoS)
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To perform a minimal QoS configuration for VoIP:
1. From the sidebar menu, click the QoS menu link, and then click the Traffic Shaping
tab; the Quality of Service - Traffic Shaping screen opens.
2. Click the New icon; the screen 'Add Device Traffic Shaping' opens.
3. From the 'Device' drop-down list, select 'Default WAN Device' (or your PPTP/L2TP
connection you have created) and then click
OK ; the screen 'Edit Device Traffic
Shaping' opens.
4. Limit the Tx bandwidth (parameter 'Tx Bandwidth') according to your modem’s uplink
bandwidth.
5. To prevent jitter in outgoing RTP packets, from the 'TCP Serialization' drop-down list,
select 'Enabled', and then use parameter 'Maximum Delay' to define the maximum
allowed delay (e.g. 20 milliseconds). This causes long TCP packets to be fragmented
when there is an active voice call.
Figure 8-12: QoS - Edit Device Traffic Shaping