TELES ECOTEL, Руководство пользователя

Страница: 50 / 247

C O N F I G U R A T I O N F I L E S
C H A P T E R 5
50
ECOTEL 3G 16.1. Revised: 1 March 2011.
Example:
5 . 1 . 1 0 P P P C O N F I G U R A T I O N F O R D I A L - U P C O N N E C T I O N
The point-to-point protocol is used for dial-up connection. That means the system can set up an Internet connec-
tion, which can be used for all local users or to transmit VoIP calls via dial-up. Bear in mind that you must configure
the firewall and NAT options accordingly.
The advantages of VoIP over ISDN can be seen especially in corporate implementation. For example, it is useful
when a very high number of connections occurs between subsidiaries and one subsidiary does not have a broad-
band Internet connection. An ISDN B-channel can be connected to the Internet and up to six voice calls can occur
simultaniously over one ISDN line. All necessary information for setup of the PPP connection is defined in the sec-
tion
[xppp<num>]
.
The settings are entered as follows:
option time-servers <ip address>;
Defines the time-server address to be assigned (RFC 868).
option routers <IP address>;
Defines the router address to be assigned.
option subnet-mask <net mask>;
Defines the netmask to be assigned (as per RFC 950).
option tftp-server-name "<link>";
Defines the TFTP server name (option 66), as per RFC 2132.
EXAMPLE:
option tftp-server-name "http://192.168.0.9";
[dhcpd]
; Global dhcp parameters
allow unknown-clients;
ddns-update-style none;
; Parameter for the Subnet
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.3 192.168.1.20;
option broadcast-address 192.168.1.255;
option domain-name "company.de";
option domain-name-servers 192.168.1.100;
option routers 192.168.1.2;
option subnet-mask 255.255.255.0;
}
Table 5.8 Settings in the
[dhcpd]
Section of the
ip.cfg
(continued)
; Global dhcp parameters