Haven't been to this customer site but the phone company has and says it's our equipment (heard that one before). Customer says that on incoming calls after lifting the handset there is about a five second delay before they can speak. Any ideas? I was thinking possibly changing the CID timer to 0 seconds if they don't have caller ID though that usually just makes calls ring in quicker not change the delay after picking up. I have a feeling that it's something on the lines themselves like low loop current.