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Basic Configuration VoIP on Cisco Packet Tracer

Hello everyone, in this tutorial I’ll discuss about how to configuration VoIP on Cisco Packet tracer. This is topology that will used on.


In this lab we will use the following devices :

  1. Router 2811
  2. Switch
  3.  IP Phone 7960

Configuration Router

First step we will configure the router as the following

Enable interfaces : 
Router#configure terminal
Router(config)#hostname R-VoIP
R-VoIP(config)#int fa0/0
R-VoIP(config-if)#no shut


Then Create sub interface on R-VoIP with vlan-id is 10 because we will use vlan 10 on this tutorial :

R-VoIP(config)#int fa0/0.10
R-VoIP(config-subif)#encapsulation dot1Q 10
R-VoIP(config-subif)#ip add


Configure DHCP Server on R-VoIP dan setup dhcp option 150 for ip-phone communication

R-VoIP(config)#ip dhcp excluded-address
R-VoIP(config)#ip dhcp pool DHCP_PHONE
R-VoIP(dhcp-config)#option 150 ip


Configuration Telephone Service. max-dn and max-ephones values are adjust to how many numbers of ip-phone that will used. ephone-dn command used for assign phone number of each dn.

R-VoIP(config-telephony)#ip source-address port 2000
R-VoIP(config-telephony)#max-dn 3
R-VoIP(config-telephony)#max-ephones 3
R-VoIP(config-telephony)#auto assign 1 to 3
R-VoIP(config)#ephone-dn 1
R-VoIP(config-ephone-dn)#number 0811
R-VoIP(config)#ephone-dn 2
R-VoIP(config-ephone-dn)#number 0812
R-VoIP(config)#ephone-dn 3
R-VoIP(config-ephone-dn)#number 0813


Configuration Switch

Configuration switchport and vlan :

SW(config)#int fa0/1
SW(config-if)#switchport mode trunk
SW(config)#vlan 10
SW(config-vlan)#name VOICE
SW(config)#int range fa0/2-4
SW(config-if-range)#switchport mode access
SW(config-if-range)#switchport voice vlan 10


Configuration IP Phone

Turn on Ip Phone with drag and drop power adaptor icon as the following :

Then move to GUI Tab and make sure the ip phones already got the phone number as the following.

Testing for Calling :

Calling is successfull.


4 thoughts on “Basic Configuration VoIP on Cisco Packet Tracer

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