Speed Dial is available only on SIP? phones. You would log into your control panel, and you can add up to 100 speed dials. You would dial *75xx for the number. This will work with standard PSTN numbers, SIP Broker numbers, or even SIP addresses. If a friend or family member has a SIP address, you would be wise to add this address to one of the speed dial extensions. SIP dialing is always free, so there will be no cost to you no matter where the destination of the caller is.