Revision as of 10:19, 6 May 2013

Module 2 - VoIP Generic

Learning materials

• Session 1 (PowerPoint diasshow)
• Session 2 (PowerPoint diasshow)
• Session 3 (PowerPoint diasshow)
• Session 4 (PowerPoint diasshow)
• Session 5 (PowerPoint diasshow)

VoIP abbreviations

• VoIP abbreviations

Exercises

• FreePBX_til_kursus.tgz

• • Eksempel til filen /etc/dhcp/dhcpd.conf
  • Eksempel til /etc/xinetd.d/tftp
• CentOS interface configuration example
• Slå Firewall fra og tilføj statiske router til andre grupper Eksempel

Part 2

cd /home
wget http://mars.merhot.dk/data/voip/FreePBX_til_kursus.tgz
tar xvzf FreePBX_til_kursus.tgz
tar xvzf asterisk.tgz
nano /etc/xinetd.d/tftp

Ret filen /etc/xinetd.d/tftp til rodkatalog /home/asterisk/tftp

Part 3

1: Fjern gamle konfigurationer, med følgende kommando og slå Firewall fra

/bin/rm /home/asterisk/tftp/SIP000*
service fail2ban stop
chkconfig --level 2345 fail2ban off
chkconfig --level 2345 iptables off
service iptables stop
yum install ed

2: Opret extension til Cisco telefon i FreePBX Opret Cisco telefonen somchan_sip telefon. Bemærk: Chan_sip anvender UDP port 5160 !!!

3: Opret filer til Cisco telefonen (Bliver lagt i tftp folderen)

/home/asterisk/bin/FreePBX_menu_cisco

4 Ret filen /home/asterisk/SIP<MAC-ADRESSE>.cnf og ret 5060 til 5160 (Alle steder)

5: Reboot telefonen, og se om den registrerer sig

Ses med:

asterisk -r
sip show peers

6:

Reset telefon metode 1

Vælg Config find Unlock indtast password cisco Vælg Networking find Erase configuration vælg yes og Safe(Vistnok)

Part 4

• IAX trunks mellem grupper
  • Link til Eksempel på Trunk
    • Gruppe 1 WAN: 172.16.93.46 - 1XXX
    • Gruppe 2 WAN: 172.16.93.37 - 2XXX
    • Gruppe 3 WAN: 172.16.93.44 - 3XXX
    • Gruppe 4 WAN: 172.16.93.240 - 4XXX
    • Gruppe 5 WAN: 172.16.93.51 - 5XXX
  • Fælles brugernavn og password
  • Bruger: asterisk Password: l8heise

Part 5

• FreePBX/Udvidede faciliteter
• PowerPoint skabelon eksempel på call-flow

Eksempler på opgaver

• Viborg kommune
• Lægehus løsning

Group 1

• Extensions: 1XXX
• Add eth1
  • network 172.21.0.0/24
  • IP address 172.21.0.1
• Add DHCP server on 172.21.0.0 range 172.21.0.100 to 172.21.0.199
  • Add option 150 (ftp) as 172.21.0.1
• Add tftp server with /home/asterisk/tftp
• Unpack asterisk.tgz in the /home directory

Group 2

• Extensions: 2XXX
• Add eth1
  • network 172.22.0.0/24
  • IP address 172.22.0.1
• Add DHCP server on 172.22.0.0 range 172.22.0.100 to 172.22.0.199
  • Add option 150 (ftp) as 172.22.0.1
• Add tftp server with /home/asterisk/tftp
• Unpack asterisk.tgz in the /home directory

Group 3

• Extensions: 3XXX
• Add eth1
  • network 172.23.0.0/24
  • IP address 172.23.0.1
• Add DHCP server on 172.23.0.0 range 172.23.0.100 to 172.23.0.199
  • Add option 150 (ftp) as 172.23.0.1
• Add tftp server with /home/asterisk/tftp
• Unpack asterisk.tgz in the /home directory

Group 4

• Extensions: 4XXX
• Add eth1
  • network 172.24.0.0/24
  • IP address 172.24.0.1
• Add DHCP server on 172.24.0.0 range 172.24.0.100 to 172.24.0.199
  • Add option 150 (ftp) as 172.24.0.1
• Add tftp server with /home/asterisk/tftp
• Unpack asterisk.tgz in the /home directory

Group 5

• Extensions: 5XXX
• Add eth1
  • network 172.25.0.0/24
  • IP address 172.25.0.1
• Add DHCP server on 172.25.0.0 range 172.25.0.100 to 172.25.0.199
  • Add option 150 (ftp) as 172.25.0.1
• Add tftp server with /home/asterisk/tftp
• Unpack asterisk.tgz in the /home directory

Session 1

• Wireshark exercise 1
• Wireshark exercise 2

Session 2

• Wireshark session 2 exercise 1
  • 02.01 – Wireshark Session 2 exercise 1.pcapng (Capture file for Wireshark Session 2 exercise 1)

Session 3

• Call Flow exercise
  • Power Point to call flow exercise

Additional resources

• VoIP abbreviations
• Switch port mirroring
• Wireshark homepage
• ISDN services pocket guide

ISDN

ISDN PRI

• Sweden Telia ISDN Multi (Swedish)
  • Telia ISDN Multi datasheet (Swedish)
  • Telia ISDN Multi datasheet (English)
• Norway Telenor ISDN Proof / ISDN FlexiUT ((Norwegian)
• Denmark TDC Flex ISDN (Danish)
  • TDC ISDN primer (Danish)

VoIP

• Understanding IP Telephony Protocols (Loads PDF)
• Emergency call E911/E112
• Medusa: Multimedia over IP(RTP, RTCP, SIP,RSTP)
• VoIP MCQ