If you are using call screening on any of the Samsung SVMi voice mails and you are also using call forward to voice mail, or pre-set forward to voice mail, you will need to increase the Forward no answer time in MMC 502. There appears to be a conflict with the screening timeout time.

The symptoms are 2 messages being left if a screened call is unanswered, the first message will probably be empty. What happens is the forward timer sends the caller to voice mail too soon and the system thinks the caller answered their phone. The mailbox greeting plays and records silence. After that the screen transfer times out and then takes the callers real message.