Precision Time Protocol Packet Tracer 7.3 - IP telephony basic configuration
- Details
- Last Updated: Monday, 20 January 2020 07:14
- Published: Sunday, 19 September 2010 12:12
- Written by PacketTracerNetwork
Tutorial description
This tutorial is designed to help you to configure the voice over ip (voip) features available in Packet Tracer 7.3
It will show you the steps required to :
- Configure Call Manager ExpressTM on a 2811 router,
- Use the various telephony devices
- Setup dial peers
- Connect CiscoTM IP phones as well as analogue phone on the network.
Network diagram
Note : Connect only IP Phone 1 at the beginning of the lab. IP Phone 2 must be disconnected.
Tasks 1 : Configure interface FastEthernet 0/0 and DHCP server on RouterA (2811 router)
Configure the FastEthernet 0/0 interface with 192.168.10.1/24 ip address. Don't forget to enable the interface with the no shutdown command !
RouterA>enable
RouterA#configure terminal
RouterA(config)#interface FastEthernet0/0
RouterA(config-if)#ip address 192.168.10.1 255.255.255.0
RouterA(config-if)#no shutdown
The DHCP server is needed to provide each IP phone connected to the network with an IP adress and the TFTP server location.
RouterA(config)#ip dhcp pool VOICE #Create DHCP pool named VOICE
RouterA(dhcp-config)#network 192.168.10.0 255.255.255.0 #DHCP network network 192.168.10 with /24 mask#
RouterA(dhcp-config)#default-router 192.168.10.1 #The default router IP address#
RouterA(dhcp-config)#option 150 ip 192.168.10.1 #Mandatory for voip configuration.
After configuring the ISR router, wait a moment and check that ‘IP Phone 1’ has received an IP address by placing your cursor over the phone until a configuration summary appears.
Tasks 2 : Configure the Call Manager Express telephony service on RouterA
You must now configure the Call Manager Express telephony service on RouterA to enable voip on your network.
RouterA(config)#telephony-service #Configuring the router for telephony services#
RouterA(config-telephony)#max-dn 5 #Define the maximum number of directory numbers#
RouterA(config-telephony)#max-ephones 5 #Define the maximum number of phones#
RouterA(config-telephony)#ip source-address 192.168.10.1 port 2000 #IP Address source#
RouterA(config-telephony)#auto assign 4 to 6 #Automatically assigning ext numbers to buttons#
RouterA(config-telephony)#auto assign 1 to 5 #Automatically assigning ext numbers to buttons#
Task 4 : Configure a voice vlan on SwitchA
Apply the following configuration on SwitchA interfaces. This configuration will separate voice and data traffic in different vlans on SwitchA. data packets will be carried on the access vlan.
SwitchA(config)#interface range fa0/1 – 5 #Configure interface range#
SwitchA(config-if-range)#switchport mode access
SwitchA(config-if-range)#switchport voice vlan 1 #Define the VLAN on which voice packets will be handled#
Task 5 : Configure the phone directory for IP Phone 1
Although ‘IP Phone 1’ is already connected to SwitchA, it needs additionnal configuration before beeing able to communicate. You need to configure RouterA CME to assign a phone number to this IP phone.
RouterA(config)#ephone-dn 1 #Defining the first directory entry#
RouterA(config-ephone-dn)#number 54001 #Assign the phone number to this entry#
Task 5 : Verify the configuration
Ensure that the IP Phone receives an IP Address and a the phone number 54001 from RouterA (this can take a short while).
Task 6 : Configure the phone directory for IP Phone 2
Connect IP Phone 2 to SwitchA and power the phone ON using the power adapter (Physical tab).
RouterA(config)#ephone-dn 2 #Defining the first directory entry#
RouterA(config-ephone-dn)#number 54002 #Assign the phone number to this entry#
Task 7 : Verify the configuration
Ensure that the IP Phone 2 receives an IP Address and a the phone number 54002 from RouterA (this can take a short while). Same procedure as task n°5.
Dial 54001 and check if IP phone 1 correctly receives the call.
