Can someone offer advice with the following:
We have a VOIP system install currently incomplete, there have been various factors responsible for the delay in the completion of the works, broadband issues, firewalls, support delays etc. We are now at a point where we can make VOIP calls from our loccal obx to a remote pbx but while the remote pbx can recieve these internal calls and hear the caller the caller cannot hear any response from the remote pbx. The remote pbx also cannot call the local pbx. The installer informs me that the LAN or the VPN between these pbxs' is now at fault because the packets are being lost.
Q. I can establish remote desktop sessions between the the local and remote offices and vica versa, so imho there is no problem with data packet transfers between the two sites. Am I right in my assumption that if the data packets are the same and that the VPN or the LAN is proven not to be responsible for the loss of data packets as these successful rdp sessions prove so? If not is there a way other than by simply testing by means of a call that the packets are transferring successfully? Is there a difference between the VOIP packets and the packets being sent and recieved during a rdp session?