IP Telephony Cookbook

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4.6. SETTING UP SIP SERVICES CHAPTER 4. SETTING UP BASIC SERVICESExample 4.6.2: Use of SIPSak for Learning SIP Path[jiri@bat sipsak]$ ./sipsak -T -s sip:7271@iptel.orgwarning: IP extract from warning activated to be more informational0: 127.0.0.1 (0.456 ms) SIP/2.0 483 Too Many Hops1: ?? (31.657 ms) SIP/2.0 200 OKwithout Contact headerNote that in this example, the second hop server does not issue any warning header fields in replies andit is thus impossible to display its IP address in SIPsak’s output.4.6.2 SIP Express RouterSIP Express Router (SER) is an industrial-strength, free VoIP server based on the Session Initiation Protocol(SIP, RFC3261). It is engineered to power IP telephony infrastructures up to large scale. The serverkeeps track of users, sets up VoIP sessions, relays instant messages and creates space for new plug-inapplications. Its proven interoperability guarantees seamless integration with components from othervendors, eliminating the risk of a single-vendor trap. It has successfully participated in various interoperabilitytests along with products of other leading SIP vendors.4.6.2.1 Getting SIP Express RouterSIP Express Router is available for download from BerliOS The newest release can be found in the folder /latest.4.6.2.2 Installation (From binary packages)Supported architecturesThe following architectures are supported by SER:• Linux/i386• Linux/armv4l• FreeBSD/i386• OpenBSD/i386• Solaris/sparc64• NetBSD/sparc64(For other architectures the Makefiles might need to be edited) There are various configuration optionsdefined in the Makefile and Makefile.defs.Requirements• gcc or icc : gcc >= 2.9x; >=3.1 recommended (it will work with older version but it might requiresome options tweaking for best performance)• bison or yacc (Berkeley yacc)• flex• GNU make (on Linux this is the standard “make”, on FreeBSD and Solaris is called “gmake”)• sed and tr (used in the make files)• GNU tar (“gtar” on Solaris) and gzip if you want “make tar” to work.• GNU install or BSD install (on Solaris “ginstall”) if you want “make install”, “make bin”, “makesunpkg” to work.• “mysql” if you need MySQL support.88
CHAPTER 4. SETTING UP BASIC SERVICES4.6. SETTING UP SIP SERVICES• “Apache (httpd)” if you want serweb support• “PHP, MySQL-PHP” for serweb support• libmysqlclient and libz (zlib) if you want mysql support (the mysql module)• libexpat if you want the jabber gateway support (the jabber module)Install the packages:Example:/root>rpm -i ser-08.11-1.i386.rpmPackages for other popular distributions are available, and can be installed using the appropriatepackage manager for that distribution.On many platforms you can start the ser service using:/etc/init.d/ser startRedHat based systems will use:/etc/rc.d/init.d/ser startThat will start the server with the default configuration. You can try to register your SIP user agent(for example MS Messenger) with the server, place first calls as well as send instant messages to otherusers registered with this server.The default configuration is very limited, its purpose is to allow to start the server easily and to testthe basic functionality. The default configuration does not include authentication, the persistence of theuser location database and many other important features.4.6.2.3 MySQL setupTo install support for a MySQL database you will need to download the package ser-mysql, whichis available from the same location from which you downloaded SIP Express Router. This packagecontains scripts to create the required database and establish permissions for preconfigured accounts.A recent release of MySQL is recommended, you should definitely use version higher than 4.0. Earlierversions may have problems with the syntax required to set permissions in the database.If you do not already have a copy of MySQL installed, download it from or check out your linux distribution. Many popular linux distribution come with the MySQLserver pre-packaged.Once you have the MySQL server installed and running, execute/usr/sbin/ser_mysql.sh createThat will create database “ser” and all the tables that are required by SER.You can verify that the database has been created, and correct permissions assigned by using theMySQL management tool and these steps:Mysql> select * from user;| Host | User | Password | Select_priv | ...| % | ser | 4e633cf914a735a0 | N | ...| localhost | ser | 4e633cf914a735a0 | Y | ...| % | serro | 7cb73a267cb7bd5f | N | ...| localhost | serro | 7cb73a267cb7bd5f | Y | ...The above results show that the two users, ser and serro, have been created and granted the permissionsneeded to access the database. Note that in the above example the permissions have been modifiedto deny access to these accounts from any system(%) other than the local host.89
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IP Telephony CookbookDr. Margit Bra
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CONTENTS3.4.1 Integrating Voice and
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CONTENTSB IP Telephony Hardware/Sof
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LIST OF FIGURESLIST OF FIGURES4.15
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1.4. HOW TO READ THIS DOCUMENT CHAP
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Chapter 2Technology BackgroundThis
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CHAPTER 2. TECHNOLOGY BACKGROUND2.2
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5.2. SUPPLEMENTARY SERVICES CHAPTER
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5.2. SUPPLEMENTARY SERVICES CHAPTER
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5.3. MULTIPOINT CONFERENCING CHAPTE
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6.2. WEB INTEGRATION OF SIP SERVICE
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6.2. WEB INTEGRATION OF SIP SERVICE
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6.3. VOICEMAIL CHAPTER 6. SETTING U
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7.1. TECHNOLOGY CHAPTER 7. GLOBAL T
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7.2. CALL ROUTING TODAY CHAPTER 7.
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7.2. CALL ROUTING TODAY CHAPTER 7.
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7.4. TOWARDS UTOPIA CHAPTER 7. GLOB
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8.3. REGULATION OF VOICE OVER IP IN
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8.5. CONCLUSION AND SUMMARY CHAPTER
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A.5. THE GRNET/RTS PROJECTAPPENDIX
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A.8. VOICE SERVICES IN THE CESNET2
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B.2. HARDPHONESAPPENDIX B. IP TELEP
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B.2. HARDPHONESAPPENDIX B. IP TELEP
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B.3. SERVERSAPPENDIX B. IP TELEPHON
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B.4. GATEWAYSAPPENDIX B. IP TELEPHO
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B.6. MISCELLANEOUSAPPENDIX B. IP TE
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GLOSSARYGLOSSARYReal Time Protocol
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