| SIP express media server - README |
Sems is a extensible media server which helps you
adding voice services to your VoIP system.
Each module or plug-in extends your system. Audio
plug-ins enable new codecs and file format whereby
application plug-ins implements the service's logic.
You can easely extend Sems by creating your own plug-ins.
The following default applications are shipped with Sems :
* voicemail: records voice messages and mail them to the callee.
* conferencing: enables many people to talk together
at the same time.
* announcement: plays an announcement.
* echo: test module echoing your voice.
* mailbox: saves voicemails into an IMAP server. Users
can dial in to check their messages
* ann_b2b: plays ann announcement before connecting the callee
in b2bua mode
* conf_auth: collect a PIN number, verify it against an
XMLRPC authentication server and connect in b2bua mode
* early_announce: announcement for early media (183)
Sems only support patent free codecs. Which means that we won't support codecs
like g729. On the other hand, we have support for all important patent free
(g711u, g711a, GSM06.10 and iLBC).
1. Ser version 0.9.6: SIP Epress Router (www.iptel.org/ser)
- Sems requires Ser as its SIP stack.
- Sems & Ser communicate together through socket, which means that a Ser
instance is mandatory on every host using Sems.
2. Python version >= 2.3 for the ivr (embedded python interpreter), optional
3. flite speech synthesizer for TTS in the ivr, optional
4. lame >= 3.95 for mp3 file output, optional
1. Download Sems through svn:
svn checkout svn://svn.berlios.de/sems/trunk
svn checkout http://svn.berlios.de/svnroot/repos/sems/trunk
2. Compile Sems:
Notice: you don't need to execute 'make install' if you want to run Sems
from the source tree.
For detailed instructions, have a look at doc/COMPILING as well.
3. Look at the default configuration file whether it fits your need:
If you installed Sems with 'make install', the configuration
is at '/usr/local/etc/sems/sems.conf'.
Else make your own using sems.conf.sample.
4. Start Ser:
Please read the Ser User's guide if you don't known
how to complete this stage.
5. Start Sems:
If you installed Sems with 'make install', sems can be
found at '/usr/local/sbin/sems'.
If you need help starting 'sems', try 'sems -h'.
* RH thread problem:
Sems has currently problems being run on Redhat 9. If you cannot wait
until it is fixed, you may want to run ans_machine after running the
This disables the new pthread implementation included in Redhat 9.
Installed file using 'make install':
/usr/local/etc/sems/sems.conf : configuration file.
/usr/local/sbin/sems : Sems executable.
/usr/local/lib/sems/plug-in/* : plug-ins.
/usr/local/lib/sems/audio/* : default path for audio files.
/usr/local/lib/sems/ivr/* : precompiled IVR scripts
/usr/local/share/doc/sems/README : this README.
source_path/scripts/sems[.redhat] : example start-up scripts.
source_path/sems.conf.example : example configuration file.
Bug report & Contact:
If you have problems configuring Ser&Sems for your needs,
look at the support information on the Ser homepage (www.iptel.org/ser)
and the SEMS hoempage (www.iptel.org/sems).
The mailing lists (http://lists.iptel.org) for SEMS are the first
address to ask for help, report bugs and improvements.
Raphael Coeffic (email@example.com),
Ulrich Abend (firstname.lastname@example.org) &
Stefan Sayer (email@example.com)
and all contributors.
Thanks goes to:
* Ulrich Abend (firstname.lastname@example.org)
for his great debuging work and ISDN gateway.
* Jiri Kuthan (email@example.com)
for the debuging work and help to implement
communicating part between Ser & Sems ('vm' module).
* All the others who helped during test session :-)