Multi-Tech Systems MVP210-SS manual 107, DiffServ Parameter fields

MultiVOIP User Guide Technical Configuration

Ethernet/IP Parameter Definitions (cont’d)

Field Name

Values

Description

DiffServ Parameter fields

DiffServ PHB (Per Hop Behavior) values pertain to a differential prioritizing system for IP packets as handled by DiffServ-compatible routers. There are 64 values, each with an elaborate technical description. These descriptions are found in TCP/IP standards RFC2474, RFC2597, and, for present purposes, in RFC3246, which describes the value 34 (34 decimal; 22 hex) for Assured Forwarding behavior (default for Call Control PHB) and the value 46 (46 decimal; 2E hexadecimal) for Expedited Forwarding behavior (default for Voip Media PHB). Before using values other than these default values of 34 and 46, consult these standards documents and/or a qualified IP telecommunications engineer.

To disable DiffServ, configure both fields to 0 decimal.

The next page explains DiffServ in the context of the IP datagram.

Call Control	0 – 63
PHB	default = 34
	.
Voip Media	0 – 63
PHB	default = 46
	n

Value is used to prioritize call setup IP packets.

Value is used to prioritize the RTP/RTCP audio IP packets.

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