Funkwerk elmeg t444 Operating Instructions Manual Download Page 64

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All IP addresses must belong to the same IP network, meaning that the network part of the IP address (and with it,
the netmask) must be identical. Example:

IP address for the PABX:

192.168.1.250

IP-netmask of the PABX:

255.255.255.0

Network part of the IP addresses:

192. 168. 1. xxx

First usable IP address:

192.168.1.1

(netmask:

255.255.255.0)

Last usable IP address:

192.168.1.254

(netmask:

255.255.255.0)

First IP-address via DHCP:

192.168.1.50 (as per configuration)

Last IP address through DHCP:

192. 168. 1. 69 (by configuration)

Number of IP addresses by DHCP:

IP addresses for Bluetooth and RAS per DHCP (11 reserved)
first IP-address:

192.168.1.70

last IP-address:

192.168.1.80

On IP address may not be used by more than one client at any one time; with regard to the example given above this
means that the IP addresses 192.168.1.2 to 192.168.1.49 and 192.168.1.70 to 192.169.1.249 and 192.168.1.251 to
192.169.1.254 can be used for PCs which have manually configured IP addresses.

The configurable parameters for the DHCP server that you can select using the button »Advanced« allow you the option of also using the
DHCP server in the existing LAN environment.

Configuration of the Internet Service providers (ISP)

An Internet Service Provider provides you with an »entrance portal« to the Internet. A distinction is made between ISPs with whom you ha-
ve a contract (for example T-Online) and Internet-by-call providers that bill you through your phone bill (for example Freenet).

The type of access is independent of the tariff charges; this can be based on actual time, volume or be a flat rate.

You can set up a connection to the Internet with your PABX system as follows:

Dial-up connections via ISDN (using PPP protocol, with one or two ISDN B channels, i. e. at 64 kBit/s or 128 kBit/s).
These types of connections require access data with the number to be dialed, the user name and password and, in
some cases, other information such as the IP address of the name server and any information about the data com-
pression method that is used (VJH).

Using xDSL (for example ADSL - T-DSL) in conjunction with a DSL modem that is compatible with your ISP via
PPPoE.
These connections require your user name and password as access data.

Via xDSL (e.g.B: SDSL) in conjunction with a DSL modem that is compatible with your ISP with a set, public IP ad-
dress. These connections require the public IP address that you have been assigned, the IP address of the next gate-
way (next hop) and the IP address for the name server of your provider.

Internet-by-Call

The Professional Configurator of the PABX system contains a list of Internet-by-call ISPs from which you can select a provider. The advanta-
ge here is that you can set up an Internet connection immediately without first having to agree to a contract. (The requisite access data are al-
ready contained in the configuration software for the Internet-by-call ISPs that are listed). You can change this configuration when you de-
cide to conclude a contract with a provider for example (at present required for all DSL providers).B:

Fallback configuration for several ISPs »Internet always works«

Description of the router functions