Reference:DHCP client

innovaphone devices include a DHCP client which allows the IP interface to be configured from a DHCP server.

In addition to that, telephone devices allow configuring a number of settings via special DHCP vendor options.

Here is how the DHCP client works.

[ This article has been converted from the previous "howto" document in the V5 predoc folder and is intended to replace this ]

Applies To

This information applies to

• All innovaphone devices,

V5.01 Build 04-5679 and V6

More Information

Problem Details

The innovaphone devices do support auto configuration via standard DHCP options.

They additionally support some innovaphone vendor specific options to effect some VoIP specific configuration.

Some of them are generic; some of them are specific to the IP200.

These configurations include

− H323 Gatekeeper

The IP addresses of the main and alternate gatekeeper. IP200 only.

− H323 Gatekeeper ID

The ID of the gatekeeper taking care of the device. IP200 only.

− POSIX Time zone

The time zone string defining the time zone the device lives in (see the “VoIP Gateways 5.0” Manual, chapter 9.1.3 for more details about time zone settings)

− Default coder

The coder the device will try negotiate during media stream setup. IP200 only.

− Language

The user interface language of the device. IP200 only.

− Location

The location information (country code, area code etc.). IP200 only.

− VLAN ID

The VLAN ID for voice traffic

− VLAN Priority

The VLAN Priority for voice traffic

− TOS Bits

The value for the IP TOS field in the IP header of voice traffic

− Enbloc dialling

Overlapped sending disabled. IP200 only.

− Dialtone type

The type of locally generated dial tones. IP200 only.

− Faststart

Disable/Enable the H245 faststart procedure

− H245-Tunnelling

Disable/Enable H245 tunneling

− Clock type

Format of date and time display. IP200 only

− Static routes

Additional static routes

− Configuration parameters for the update server

URL to retrieve update commands from and poll interval

− LDAP directory configuration

Parameters to access an external LDAP directory. IP200 only

System Requirements

To use vendor specific DHCP options, a DHCP server that supports such options is required.

Most popular DHCP server implementations such as the Microsoft Windows DHCP service and the Linux dhcpd do so.

Installation

For the DHCP server to support vendor specific options, the options must be made known to the server.

Consult the accompanying documentation which comes with your DHCP server implementation how to do this.

In this section, the installation of innovaphone vendor options is demonstrated using a Microsoft Windows 2000 DHCP server.

First you need to create a new vendor class.

Use the “Define Vendor Class…” / ”Herstellerklasse definieren” menu entry on the DHCP server’s context menu

Add a new vendor class as follows:

Anzeigename / Display name innovaphone

Beschreibung / Description innovaphone VoIP Options

Kennung / ID (ASCII) 1.3.6.1.4.1.6666

Add the innovaphone options. Use the “Configure predefined options” / “Vordefinierte Optionen einstellen” entry in the DHCP server’s context menu

Select the innovaphone option class and add the innovaphone specific options

Name--- Data type--- Array--- Code

H323 gatekeeper-- IP address--- Yes--- 200

H323 gatekeeper id--- String--- No--- 201

POSIX TZ[1]--- String--- No--- 202

Default coder--- String--- No--- 203

Language--- String--- No--- 204

Location[2]--- String--- No--- 205

VLAN ID2--- Word (16bit)--- No--- 206

VLAN Priority2--- Byte (8bit)--- No--- 207

TOS Bits2--- String--- No--- 208

Enbloc dialling--- Byte (8bit)--- No--- 209

Dialtone type--- Byte (8bit)--- No--- 210

Faststart--- Byte (8bit)--- No--- 211

H245-Tunnelling --- Byte (8bit)--- No--- 212

Clock type--- Byte (8bit)--- No--- 213

Static Routes--- String--- No--- 214

Update URL--- String--- No--- 215

Update Poll Interval--- Word (16bit)--- No--- 216

LDAP directory--- String--- No--- 217