VOICE OVER INTERNET PROTOCOL
VARINDER SINGH WALIA
What is VOIP 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
HOW DOES IT WORK? 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.
ADVANTAGES OF VOIP
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.
Disadvantages of VOIP 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.
CONFIGURATION OF VOIP PHONE
CONFIGURE FASTETHERNET INTERFACE PORT STEP -1 #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
DHCP Vari(config)#ip
STEP -2
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
CONFIGURE OF TELEPHONY SERVICE Vari(config)#telephony-service Vari(config-telephony)#max-dn
5 Vari(config-telephony)#max-ephones 5 Vari(config-telephony)#ip sourceaddress 192.168.10.1 port 2000 Vari(config-telephony)#auto assign 1 to 5
CONFIGURE A VOICE VLAN ON SWITCH Vari(config)#interface
range fa0/1 – 5 #Configure interface range# Vari(config-if-range)#switchport mode access Vari(config-if-range)#switchport voice vlan 1
RESULT