What is the feature code for forward to Voicemail? I want to forward incoming calls to the mailbox without the phone ringing.

Hi Shailesh,
I have steps below on how to turn it on and since your concern is to turn it off please do the vice versa. Hope it helps.
Forward calls to your voicemail or another phone number Your phone is ringing, but you can't answer? Let the call go to your
voicemail, or forward it to another number. Call forwarding is a
network service.
1. Select settings > calls > call forwarding.
2. Select when to forward the incoming voice calls:
all voice calls - Forward all calls.
if busy - Forward when busy.
if not answered - Forward when not answered.
if out of reach - Forward when the phone is switched off or out of
network coverage for a certain length of time.
if not available - Forward when busy, when not answered, when the
phone is switched off, or when out of network coverage.
3. Select activate > to voice mailbox or to other number.
4. If if not answered or if not available is selected, set the length of
time after which a call is forwarded
Nokia 311 User Manual Page 30 Forward Calls To Your Voicemail Or...

Your model is a phone only, without an answering machine built in. This means that voicemail is provided by your phone service on your line, and that's where you need to adjust the rings before it picks up. The phone itself has nothing to do with it.

You may have to call your service provider for setup instructions because not all systems are the same, but here's how it usually works. Pick up your phone and call your own number to reach your voicemail. When your message starts, press the * button and the system will ask for your pass code (just like when you call to get your messages). Follow the voice prompts to reach the main menu, then mailbox settings, where you'll be able to change the ring count.

If these steps don't work for you, ask your service provider what you need to do.

If the voicemail it goes to is the on site voicemail, then try canceling call forwarding of the phone associated with the mailbox that gets the message by pressing FEATURE #4 from that phone. If the voicemail it goes to is an external voicemail as in that of a cellphone then try canceling line redirection by pressing #84 then press the line to cancel redirection on. Repeat for additional lines.

Sounds like you need to set the call forward no answer to the VM pilot DN for the set with the new mailbox.

Ok, do you know how to get into system programming?

If you do:
-> first dial FEATURE 985 this will give you the DN(Extn) for the voicemail
-> get into programming
-> TERMINALS&SETS enter and put in the extn that is giving you issues
-> then under CAPABILITIES look for FWD NO ANSWER and put in the DN of the voicemail you saw with the Feature 985
-> hit next for the number of rings you want it to ring before going to voicemail
-> hit next and you can now RLS to back out of programming.

Voila, that set will now goto voicemail.

Transfer to voice mailbox: Feature 986, dial ext. number of phone and release. Call is transferred to mailbox without ringing the phone.

You want to make sure your callforwarding is on. Sometimes when you select sleep mode, the calls will divert directly to Voicemail. Plus, ensure you have signal. Without signal, by default the calls go directily to voicemail. We won't wanna miss a call here. You can follow these steps here. start
settings
phone
services
call forwarding
get settings (wait for a while)
forward all incoming phone calls (check the box)
OK
OK
Exit

In the option to forward calls, there should be an option for the amount of seconds the phone RINGS prior to forwarding directly to voicemail.
IF your HTC device doesn't have the option for voicemail, and your calls are routed else where, contact your carrier for the voicemail number. This is very important!

Cheers!

There is a feature that most dealers do not activate called "Voice Mail Transfer" which transfers an incoming call to a person's (or department's) voice mail box. Forwarding calls to someone's mailbox is not possible without special programming by a certified dealer.

We have a support package that allows us to make all the changes you need over the Internet for a flat annual fee. If you want your whole system to work properly and all changes to be made for you at a flat budget, call us at 877-236-8376.

get your mailbox number then type in **61*44then mailbox mumber*11*then a two digit number between 00 and 30 (seconds delay).