Hi, We've just upgraded from v12.5 to v15. Our custom hold music is playing intermittently, not poor quality. Sometimes it will play, some times it won't, leaving the caller "listening" to static. The .wav file has been correctly re-encoded, 8 KHz, 16 bit, mono. I have played back the hold music though a handset, no problems. I had a look though the forums and couldn't see anyone having posted about this. Any help would be appreciated. Thx.