I manage a network whereby the branches are connected with VOIP using pots connected to local PABX. All has been well till yesterday when one branch cannot hear callers from the central site. I have tried checking all that i know of VOIP but in vain. Please, i need someone to point me in the right direction.
My background is routing and switching.
"What would make the remote users fail to hear me. I can hear them clearly"