This tutorial gives very good understanding on CCNA (VOIP). After completing this tutorial.You will find yourself at a moderate level of expertise in knowing Advance Networking(CCNA)

1. VARINDER SINGH
WALIA

2.  Full form of VOIP is Voice over Internet
Protocol.
 Voice over Internet Protocol is a category
of hardware as well as software that
enables people to use the Internet as the
transmission medium for telephone calls
by sending voice data in packets using IP
rather than by traditional circuit.
 General phone service via VOIP costs less
as compare to traditional phones

3. VOIP operates by transferring voice signals
between IP addresses, which means that these
signals have to transform into pieces of data small
enough to transmit. Vocal samples from the sender
are broken down into voice “packets,” which are
given routing information and sent to the receiving
end. The packets transmit one-by-one, then re-
form as close to the original state as possible,
creating one whole voice. This process
compresses the voice signal, and then
decompresses the signal for the receiver.

4.  VoIP Is Easier to Install, Configure, and Maintain
 VoIP Scales Up or Down Easily
 In VOIP you can call or message or do both at
the same time with VOIP services.
 Inexpensive and easy to use
 Monthly fee you may make unlimited free calls
within a geographic area.

5.  Loss of service during outages.
 With VOIP emergency calls, it is hard to locate
you and send help in time.
 Some times during calls, there may be periods of
silence when data is lost while it is being
unscrambled.
 Latency and traffic.
 No standard protocol is applicable.

7. #Configure the FA 0/0 interface#
Vari>enable
Vari#configure terminal
Vari(config)#interface FastEthernet0/0
Vari(config-if)#ip address 192.168.10.1
255.255.255.0
Vari(config-if)#no shutdown

8.  Vari(config)#ip dhcp pool VOICE
 Vari(dhcp-config)#network 192.168.10.0
255.255.255.0
 Vari(dhcp-config)#default-router 192.168.10.1
 Vari(dhcp-config)#option 150 ip 192.168.10.1

9. Vari(config)#telephony-service
Vari(config-telephony)#max-dn 5
Vari(config-telephony)#max-ephones 5
Vari(config-telephony)#ip source-address
192.168.10.1 port 2000
Vari(config-telephony)#auto assign 1 to 5

10. Vari(config)#interface range fa0/1 – 5
#Configure interface range#
Vari(config-if-range)#switchport mode
access
Vari(config-if-range)#switchport voice vlan
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