Which are some of the most reputed journals with an impact factor greater than 4 to publish telecommunications and wireless/wireline networks research?
IEEE Transactions on Wireless Communications, IEEE Journal on Selected Areas in Communications, and IEEE Transactions on Communications have the highest impact factors and the best reputations among the people working in the field.
There are other IEEE journals/magazines that publish tutorials, surveys, and reviews.
The answers you have received so far are good but it does depend on exactly what you are trying to publish. If you have something of the highest technical quality with a broad impact in communications, I would recommend IEEE Transactions on Communications, if it is shorter IEEE Communications Letters. If it fits a call for papers then IEEE Journal on Selected Areas in Communications. If it is specifically wireless you should consider IEEE Transactions on Wireless Communications or shorter in wireless IEEE Wireless Communications Letters. If it is less technical but more of an overview or tutorial I would recommend IEEE Communications Magazine.