Change the name of an incoming call. You can change the name of a specific trunk incoming call to specify which trunk the call comes in just from the name displayed.
DNIS is a telephone service that enables a company to identify which telephone number was dialed. Users could configure DNIS to allow the IP phones to display which trunk is passing the call. For example, a company may have different numbers for different areas of customer support. DNIS can help to direct the call to the appropriate place and provide support in the right language. A company may also have different number for different product line it sells. Yeastar IP PBX can analyze the DNIS and play the right greeting message.
DID (Direct Inward Dialing)
DOD (Direct Outward Dialing)