will be very helpful get the addons for mozilla or chrome

Does it have to be a browser extension add-on? How about a simple website? Although they do have a Chrome add-on, GoToConnect's (formerly Jive) website is feature-rich. It's basically an advanced desktop phone in a browser with the ability to customize views and manage access to features for basic users. Yes, you can click-to-call using your GoToConnect extension and enter any phone number using your keyboard numbers to connect. In addition to making and receiving calls through the website, you can also send and receive text messages, check voicemail, have video enabled conference meetings, store a phonebook, check your extension call history and control do-not-disturb. Our company switched from Vocalocity (now Vonage Business) and have been on GoToConnect for about a year now. We absolutely love everything about GoToConnect and can't imagine going anywhere else for our business VoIP service.