# LAN Policy (QoS)

## Purpose

The LAN Policy form provides quality of service (QoS) configuration using Differentiated Services Code Point (DSCP) or DiffServ. It allows you to give priority to voice media and voice signaling traffic and to map DSCP to Layer 2 (L2) Priority. Mapping ensures that voice priority is maintained in networks that use the L2 Priority QoS mechanism. For more information about LAN Policy, see the MiVoice Business Engineering Guidelines.

Use this form when performing the following tasks:

- Set Up Your System

## Conditions

- Changes to the DSCP values require a system reboot to take effect.

- For an EX controller, QoS values MUST be specified from this form only.

NOTE: The QoS values specified in this form do not match with the QoS values in the EX Controller Web GUI due to the difference in the byte values of DiffServ. However, the DiffServ in this form is configured such that QoS remains the same even though the QoS value in the EX Controller Web Gui is different.

## Field Descriptions

| DSCP [0-63] | L2 Priority [0-7]
Voice Media | Enter the Differentiated Services Code Point Value (0-63) for real-time voice streaming (e.g., phone conversations) and signaling information that requires low network latency (e.g., MiNET Mitel's proprietary signaling protocol used to control Mitel IP and TDM telephones., SIP, SAC Switch Application Communications (SAC) protocol. A messaging protocol used by IP phones to support graphics-based software applications on the MiVoice Business system. List of SAC sets supported by MiVoice Business 8.0: 5240, 5304, 5312, 5320, 5320e, 5324, 5330, 5330e, 5340, 5340e, 5360, 5560 IPT, Navigator, WebSet (5140 or 5240). NOTE: The 5240 and WebSet are no longer supported.). This value should match the value programmed for DHCP Option 43 and 125. The defaults are 46 for voice media and 24 for voice signaling. The DSCP value for non-voice media or signaling traffic (represented by the 'Standard' field) is fixed at 0 (zero). Data transfers (e.g., TCP/IP packets) that are not time sensitive fall into the Standard service class. NOTES If you want the L2 Priority settings for the voice media and voice signaling to be different, then the DSCP values must also be different. The Voice Signaling value is applied to health check messages that are sent between resilient MiVoice Business systems. | Enter the voice VLAN priority (0-7) for expedited forwarding of voice and non-voice (i.e., Standard) traffic. The controller will apply the voice media and signaling priority to traffic originating from the System IP address. These priority values should match the those programmed on the external L2 switches as well as the value programmed for DHCP Option 43 and 125. Note that the data VLAN default is 1. The defaults are 6 for voice media, 3 for voice signaling, and 0 (zero) for non-voice (Standard) traffic.
Voice Signaling
Standard