I have a new 7400 running v4.51 with an SVMi20 that seems to be having trouble decoding DTMF. I can't replicate the problem, but the complaints are so widespread that it must be happening. With remote calls to the voicemail DID, it sometimes won't go to the mailbox when it's entered and will loop back to the general greeting. I've monitored port activity as I call in and it decodes and transfers just fine on every digit. I've done this from multiple phones and tried many mailboxes. Has anyone else encountered this elusive problem and is there an optimal DTMF timing adjustment that alleviates it? Thanks in advance!