Appendix D. Setting up a dial-up line

This appendix explains how to set up a dial-up line in Linux for use with the Kannel WAP gateway. In order for it to work you need a Linux kernel with PPP capabilities. Most distributions provides PPP kernel support by default. For more information how to compile PPP support into the kernel please read the "Linux Kernel HOWTO" at http://www.linuxdoc.org/.

Analog modem

This section explains how to set up a dial-up line with an analog modem.

Download and install the mgetty package.

rpm -ivh mgetty-VERSION-rpm

To run mgetty as a daemon, add the following line to /etc/inittab.

Read man inittab for more detailed information. In this example we assume your modem is connected to the serial port ttyS0 (COM 1).

S0:2345:respawn:/sbin/mgetty ttyS0 -x 6 -D /dev/ttyS0

We need to start the pppd automatically when mgetty receives an AutoPPP request. Add the next line to /etc/mgetty+sendfax/login.conﬁg

/AutoPPP/ - - /usr/sbin/pppd file /etc/ppp/options.server

In /etc/mgetty+sendfax/mgetty.conﬁg you might need to change the connect speed between the computer and the modem. Note: this is not the connect speed between the WAP client and the server modem. If you are e.g. going to use a Nokia 7110 as the server side modem you need to change the speed to 19200. Usually you can just leave the speed to the default value (38400).

speed 38400

Add the following lines to /etc/ppp/options.server

refuse-chap

require-pap

lock

modem

crtscts

passive

192.168.1.10:192.168.1.20

debug

104 WAP and SMS gateway specifications

Nokia has long been a pivotal player in the telecommunications industry, and its contributions to mobile communication technology are numerous. Among these contributions, the Nokia WAP and SMS Gateway stand out as essential elements in enabling mobile internet access and messaging services in the early days of wireless communication.

The Nokia WAP (Wireless Application Protocol) gateway was introduced to facilitate mobile access to the internet and to allow users to interact with web services through their mobile devices. Built on a client-server architecture, the WAP gateway acted as a bridge between the mobile network and the internet, translating traditional web content into a format that mobile devices could effectively render. This conversion was crucial, given the limitations of early mobile devices regarding screen size, processing power, and network bandwidth.

One of the main features of the Nokia WAP gateway was its ability to provide users with real-time access to information such as weather updates, news, and stock prices. By using a lightweight markup language called WML (Wireless Markup Language), the gateway allowed developers to create mobile-friendly websites that could be accessed via WAP-enabled devices. This marked a significant step toward the mobile internet we know today, creating a new realm of possibilities for developers and users alike.

Another critical aspect of Nokia's offering was the SMS (Short Message Service) gateway. The SMS gateway provided a robust platform for sending and receiving text messages across various mobile networks. It enabled seamless communication between devices, regardless of the underlying technology. This feature made SMS a popular choice for both personal communication and business applications, such as marketing campaigns and customer service notifications.

The Nokia SMS gateway utilized established protocols, such as SMPP (Short Message Peer-to-Peer), to ensure reliable message delivery and efficient interaction between SMS applications and mobile networks. Its characteristics included scalability, allowing service providers to handle large volumes of messages, and flexibility to integrate with existing applications and systems.

In summary, the Nokia WAP and SMS gateway played a vital role in the evolution of mobile communication. With features that enabled mobile internet access and streamlined messaging capabilities, these technologies laid the groundwork for the mobile-centric world we live in today. Their legacy continues to influence mobile application development and the broader telecommunications landscape. As the industry progresses, the innovations introduced by Nokia serve as a reminder of the foundational technologies that paved the way for modern mobile experiences.

Nokia WAP and SMS gateway manual Appendix D. Setting up a dial-up line, Analog modem, 104

Models: WAP and SMS gateway