We have reported this before, but it has been intermittent & difficult to prove. Sometimes when we make a call the other end hears us OK, but what we hear is their voice breaking up badly. This is rather like a mobile call in a bad area. We had this twice today to two different numbers, once this morning & again at around 19:02 this evening. We have tried it with a cordless & a corded phone it makes no difference. In each case, we have originated the call, but I don't think that is anything to do with it.
When you remake the call, it is fine.
All of these calls seem to be to other numbers on our exchange. I don't profess to know how calls route within the same exchange, but I would guess that they use VoIP these days. The symptoms that we get is identical to a call going over a particular route where the QoS is either non-existent or wrongly configured, causing the RTP voice packets to break up, being held up by larger data packets.
Hi Apologies Im not ignoring you at all, simply waiting for more advice from our network team
I have ran every line test we have at our disposal and nothing is picked up, so not really sure where to go.
Ill let you know when they reply.
Thanks @OCE_Arne for the update.
I have reported this about twice before & got nowhere. I don't believe it is anything to with either my line or phones nor the called number's line & equipment, because when you remake the call it is fine. I am convinced it is down to some bad route we pick up when the call routes to the destination (although on the same exchange).
Thanks for that, no we haven't had problems since then, but it may be a week or more before I can be sure due to its intermittent nature. I'll let you know.