noisy lines

Building MDF

17 Nov: Noisy lines

Recently we had a call from one of our new customers with Telstra SIP Connect lines saying that they had noisy lines at one site but only on incoming calls. The first call was fine but when a second call came in it was noisy and very hard to hear the person at the other end. What could it be? Some issue in the Telstra network? Some issue with the Avaya phone system all of…