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voip call

What is the VoIP Call?  VoIP or Voice over internet protocol is a relatively new telephony system.  The system is based on Internet technologies.  A VOIP call is voice communication over an IP network. For a VoIP call, the caller has either a softphone or IP phone for dialing a number.  For a soft-phone, a …

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virtual phone number

What is a Virtual phone number? A virtual phone number is a VoIP number or gsm subscriber phone number.  It is similar to any other phone number, mobile or fixed-line subscribers have. But the main difference is that this number does not belong to any sim card or to any fixed line device. VOIP providers …

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Tshark

Tshark Command Tshark is a tool or program available on Windows and Linux.  Having no GUI only command-line interface. Wireshark is a packet capturing tool, which has a GUI option. Tshark is the command-line version of Wireshark.  It captures the bytes over a computer network and displays the capture on-screen or saves in a file.  …

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tcpdump command

Tcpdump command As with the learning of protocols. It is also important to have a tool to capture the network packets on the wire.  Tcpdump is a tool or command on Linux,  for capturing network packets on the IP interface.  This works over network interfaces and captures packets at the data link layer level. A …

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