Specifications

TD 92326GB

2009-03-10 / Ver. E

Installation and Operation Manual

VoIP Gateway

2 Select/Enter the following settings.

3 Click “OK”.

7.5 DHCP Server

The VoIP Gateway supports automatic configuration using standard DHCP options. In

addition they support several specific options for some configuration options for VoIP.

The configuration includes:

• Time Zone string (to define the time zone for the equipment location)

• VLAN ID (the VLAN identity for voice traffic)

• VLAN priority (the VLAN priority for voice traffic)

• TOS Bits (the value of the IP TOS field for VoIP traffic)

• Enbloc dialling (forced en-bloc dialling)

• Configuration parameters for the Update Server.

For information on the options for the DHCP standard, see DHCP Configuration Options

on page 33.

System requirements

To be able to use these specific DHCP options, a DHCP server is required, which actually

supports these options. The most common DHCP servers are, for example, Microsoft

Windows DHCP service and Linux dhcpd.

Installation

To make the specific DHCP options useable for the DHCP server, the server has to be

informed about them. Refer to the documentation for your DHCP server.

Field name Description

• ID Enter the 802.1Q VLAN id, for example “1”. This is the ID

of the Virtual LAN.

The VLAN ID with the value 0 switches QoS off, following

802.1Q. The value 0 is assumed if the 802.1 Q VLAN ID

field is empty. If your switch port connected to the VoIP

Gateway is configured to a different VLAN ID, the same

value must be used here, to enable the prioritization of

the Ethernet packets.

Note:Note the configuration of the switch before setting

the VLAN ID.

• Priority - RTP Data Enter “6” in the 802.1p priority on the Virtual LAN.

The Ethernet packets sent by the equipment can be

prioritized, at layer 2, in the switch. To do this, the packets

must be marked accordingly during transmission. This

function must be supported by the switch used.

• Priority - Signalling Configuration of the TOS value for Signalling (for example

H.323 or SIP) packets.