Asterisk cmd PPPD
Created by: sirrix,Last modification on Thu 17 of Jul, 2008 [19:04 UTC] by JustRumours
Synopsis
The PPPD command is for use with arbitrary digital (ISDN) connections. It provides RAS connection by using the (external) pppd program to permit you to use digital (ISDN) Asterisk channels as data channels to give you a PPP data link (perhaps an Internet connection). This command is not for use with analog lines; it does not provide a modem emulator. The PPPD application provides HDLC for using (only!) synchronous PPP.The PPPD application has successfully been tested on Sirrix ISDN channels but may work on any other digital (ISDN) Asterisk channel as well.
Description
PPPD(path_to_pppd and_additonal_arguments)Executes a RAS server using pppd on the calling channel. Your pppd must support synchronous mode. Give the path to pppd (usually /usr/sbin/pppd) and additonal parameters (like "call isdn") as parameter.
Starting points
- PPP support in Kernel needed (included in standard Debian kernels)
- Standard pppd is needed (no aditional patches needed; standard Debian ppp package works)
- Download, compile and install the PPPD package with
wget http://www.sirrix.de/download/app_pppd-060822.tgz
tar xvfz app_pppd-060822.tgz
cd app_pppd
make clean
make dep
make
make install
- Create a "peer"-file in /etc/ppp/peers. Example:
## local and remote IP
192.168.99.1:192.168.99.2
## enable to see some debugging messages
#debug
## we need the sync option
sync
## we want PAP (we present ourself as dial-in server)
+pap
## we don't need to authenticate ourself
## as we present ourself as dial-in server
noauth
- Add user and password to /etc/ppp/pap-secrets:
myusername * userpassword *
- See pppd manual page (man 8 pppd) for more details about configuring the PP daemon.
Once you have pppd installed, and you have the ppp support in your kernel, you are ready for the configuring your Dialplan. Here is the entry I used to get started with:
exten => 4711,1,Answer
exten => 4711,2,PPPD(/usr/sbin/pppd call isdn)
exten => 4711,3,Hangup
PPPD allows you to provide additional pppd arguments in the command argument. The line above will tell PPPD to use the "isdn"-peer configuration file in /etc/ppp/peers. You will want to figure out what pppd flags will work best for your installation.
The external PPP daemon is connected to the calling channel by using a PTY (/dev/pts/*) that is automatically allocated and freed by the PPPD application. The name of the device file is passed as additonal last parameter to the external PPP daemon.
Download
- You can download the app_pppd package from the Sirrix AG Website.
- Direct download link:
- Current version 060822: http://www.sirrix.de/download/app_pppd-060822.tgz
- Old version 050202: http://www.sirrix.de/download/app_pppd-050202.tgz
- If you have questions or want to report a bug, please contact the author Oskar Senft by e-mail: o (dot) senft (at) sirrix (dot) com
Notes
- The PPPD application has successfully been tested on Sirrix ISDN channels but may work on any other digital (ISDN) Asterisk channel as well.
- The PPPD application has successfully been tested to connect to a standard ISDN4Linux installation (ipppd).
- The PPPD application has successfully been tested to connect to a standard CAPI channel installation, to provide internet or private connection. Be aware though that due to lack of documentation I wasn't able to hangup the channel manually (after the connection was up). Maybe through an exec dialplan directive in order to kill the PPPD process.
See Also
Asterisk | Configuration | The Dialplan - extensions.conf | Dialplan Commands
Comments
333PPPD from Asterisk
I would like to connect from one asterisk to another asterisk by BRI using PSTN Switch.
In all materials and examples are information only how to answer connection and setup pppd on asterisk It is possible to connect two asterisk by ppp? I managed to connect from router with bri interface to asterisk using app_pppd and standard ppp demon in linux. I need to initialize ppp from asterisk. Please help me.
333Re: PPPD & Analog dialup
can we provide dialup access for ANALOG calls incoming to Asterisk ??
333PPPD and Asterisk 1.4.x
gcc -c -g -Wall -O -D_ISOC99_SOURCE -D_GNU_SOURCE -I/usr/include -o app_pppd.o app_pppd.c
app_pppd.c:45:2: warning: #warning ASTERISK_NEW_MODULE_INTERFACE defined
app_pppd.c:61: warning: type defaults to `int' in declaration of `LOCAL_USER_DECL'
app_pppd.c:61: warning: data definition has no type or storage class
app_pppd.c: In function `app_pppd_exec':
app_pppd.c:769: warning: implicit declaration of function `LOCAL_USER_ADD'
app_pppd.c:801: warning: implicit declaration of function `LOCAL_USER_REMOVE'
app_pppd.c:728: warning: `u' might be used uninitialized in this function
app_pppd.c: In function `unload_module':
app_pppd.c:828: error: `STANDARD_HANGUP_LOCALUSERS' undeclared (first use in this function)
app_pppd.c:828: error: (Each undeclared identifier is reported only once
app_pppd.c:828: error: for each function it appears in.)
app_pppd.c: At top level:
app_pppd.c:827: warning: `unload_module' defined but not used
app_pppd.c:840: warning: `load_module' defined but not used
app_pppd.c:848: warning: `description' defined but not used
app_pppd.c:861: warning: `key' defined but not used
make: *** app_pppd.o Error 1
It is version for Asterisk 1.4.x?
333PPPD & Analog dialup
We read in the description that PPPD "is for use with arbitrary digital (ISDN) connections". If we use an ISDN EICON Diva Server card with Voice modems can we provide dialup access for ANALOG calls incoming to Asterisk or are we limited to providing access only for ISDN calls?
333PPPD vs ZAPRAS
333Dialout Configuration
333PPPD vs ZAPRAS