Configuring AastraLink Pro 160 System and Network Parameters

Configuring VoIP Settings

SIP Direct Inward Dialing (DID)

An administrator can provide SIP Direct Inward Dialing (DID) prefixes for SIP trunks. Direct Inward Dialing (DID) is a service of a local phone company that provides a block of telephone numbers for calling into a company's private branch exchange (PBX) system.

Using DID, a company can offer its employees a different direct-dial PSTN number for each SIP phone, with either system-wide DID pattern matching or direct-mapped user DID entries used to route calls.

This feature on the VoIP Menu applies on a global basis for all phones in the AastraLink network.

Note: Direct mapping DIDs have highest priority, followed by patterns, and then the Interactive Voice Response (IVR) if no DID is matched. SIP DID mapping can also be applied on a phone-by-phone basis using the SIP DID Number parameter when editing or adding phones on the Users Menu.

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Aastra Telecom Pro 160 manual SIP Direct Inward Dialing did