Managing Serial Networks Using UUCP and PPP in Oracle^® Solaris 11.4

How to Create the Instructions for Calling a Peer

Before the dial-out system can initiate a PPP link, you must collect information about the dial-in server that is to become the peer. Then, you use this information to create the chat script, which describes the actual conversation between the dial-out system and the peer.

1. Determine the speed at which the dial-out system's modem needs to run.

   For more information, see Configuring Modem Speed for a Dial-Up Link.

2. Obtain the following information from the dial-in server's site.

   • Server's telephone number

   • Authentication protocol that is used, if appropriate

   • Login sequence that is required by the peer for the chat script

3. Obtain the names and IP addresses of name servers at the dial-in server's site.
4. In a chat script, provide instructions for initiating calls to the particular peer.

   For example, you might create the following chat script, /etc/ppp/mychat, to call the dial-in server myserver.

   SAY "Calling the peer\n"
           TIMEOUT 10
           ABORT BUSY
           ABORT 'NO CARRIER'
           ABORT ERROR
           REPORT CONNECT
           "" AT&F1&M5S2=255
           TIMEOUT 60
           OK ATDT1-123-555-1234 
           CONNECT \c
           SAY "Connected; logging in.\n"
           TIMEOUT 5
           ogin:--ogin: pppuser
           TIMEOUT 20
           ABORT 'Login incorrect'
           ssword: \qmypassword
           "% " \c
           SAY "Logged in.  Starting PPP on peer system.\n" 
           ABORT 'not found'
           "" "exec pppd"
           ~ \c

   The script contains instructions for calling a Oracle Solaris dial-in server that requires a login sequence. For a description of each instruction, refer to Basic Chat Script Enhanced for a UNIX Login Style. For complete details about creating a chat script, read the section Defining the Conversation on the Dial-Up Link.

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   Note - You do not invoke the chat script directly. Rather, you use the file name of the chat script as an argument to the chat command, which invokes the script.

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   If a peer runs Oracle Solaris or a similar operating system, consider using the preceding chat script as a template for your dial-out systems.