User guide

Chapter 5: Technical Configuration
Ethernet/IP Parameter Definitions (cont’d)
Field Name Values Description
IP Parameter fields
Gateway Name alphanumeric Descriptor of current voip unit to distinguish it from
other units in system.
Enable DHCP Y/N
disabled by
default
Dynamic Host Configuration Protocol is a method for
assigning IP address and other IP parameters to
computers on the IP network in a single message with
great flexibility. IP addresses can be static or temporary
depending on the needs of the computer.
IP Address 4-places, 0-255
The unique LAN IP address assigned to the
TalkAnytime unit.
IP Mask 4-places, 0-255
Subnetwork address that allows for sharing of IP
addresses within a LAN.
Gateway
4-places, 0-255. The IP address of the device that connects your
TalkAnytime to the Internet.
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 PHB 0 – 63
default = 34
.
Value is used to prioritize call setup IP
packets.
Voip Media PHB 0 – 63
default = 46
n
Value is used to prioritize the RTP/RTCP audio
IP packets.
Multi-Tech Systems, Inc. TalkAnyTime User Guide 69