Phone – Key Feature Codes

*30 - Blocks your Caller ID (for all subsequent calls)
*31 - Displays your Caller ID (for all subsequent calls)
*67 - Blocks your Caller ID when dialling a number (per call). Dial "*67" and the number. (No dial tone is played in the middle.)
*68 - Unblocks your Caller ID on all subsequent calls. Dial "*68" and the number.
*82 - Displays your Caller ID (per call). Dial "*82" and the number. (No dial tone played in the middle.)

*72 - Unconditional Call Forward. Dial *72 and forwarding number, then "#". Wait for dial tone and hang up. (Dial tone indicates successful forward.)
*73 - Cancels Unconditional Call Forward. Dial *73, wait for dial tone, then hang up.
*90 - Busy Call Forward. Dial *90 and forwarding number, then "#". Wait for dial tone then hang up.
*91 - Cancels Busy Call Forward. Dial *91, wait for dial tone, then hang up.
*92 - Delayed Call Forward. (Rings 4-5 times first then forwards.) Dial *92 and forwarding number, then "#". Wait for dial tone then hang up.
*93 - Cancels Delayed Call Forward. Dial *93, wait for dial tone, then hang up.

Grandstream DP 715/710

During a phone conversation, you can press "R" on the phone and dial the 3rd party's phone number.
When you hear a ring tone, hang up the phone and the call will be automatically transferred to that 3rd party.

While you are on a call with Caller A, press "R" to get a dial tone and dial Caller B's number. When Caller B answers, then press "R" again and the conference call will be established with you and Callers A and B.
If Caller B does not answer, you can press "R" to get back to Caller A.
If your press "R" during the conference call, then Caller B will be dropped.
If you hang up during the conference call, it will be terminated for all three parties when the configuration "Transfer on Conference Hang up" is set to "No".
If the configuration is set to "Yes", then the call will be transferred to A and B and they can continue the conversation.

Check out how you to use our special "Access Numbers" to save money when you travel!

Use the "Flash" button on the analog phone to hold the current call.
After the dial tone is played, press "*87", and then dial the number you are transferring the call to.
End your dialling with "#" or wait for time out.
You will be disconnected after the transfer is completed.

Use the "Flash" button on the analog phone to hold the current call.
After dial tone is played, dial the number you are transferring the call to.
After your transfer target answers, you can hang up and the Adapter will complete the transfer automatically.
If your target does not answer the call, press "Flash" on the analog phone to resume the original call.

Assuming that you are in a call and wish to bring a third party into conference:

Press "Flash" on the analog phone to hold the current call.
After dial tone is played, dial the third party's number.
If the third party answers, press "Flash" to bring both parties into the conference.
If the third party does not answer the call, you can press "Flash" to resume the original call.
If "Flash" is pressed during the conference call, then the third party will be dropped out.
If you hang up your phone during the conference call, then the call will be terminated for all three parties.

If the "Transfer on Conference Hang-up" feature is enabled, then when you hang up, the other parties will still remain on the line.