Through our cooperation with telecommunication operators, we offer DID (digital inward dialing) and DOD (digital outward dialing) subscription services. These access numbers will be connected to customers PBX, and work for both making outgoing call (outbound), as well as receiving incoming call (inbound). The DID numbers are also accessible from other domestic and international telco providers. By obtaining DOD subscription, customer can choose a number which they intend to use as identity, normally one that easy to remember, and this chosen number can be used CLIP (Calling Line Identification Presentation), which will appear on called party, and can support large number of simultaneous calls. While for DID subscription, customer can choose a number which they intend to publish as access number, and this number can support large number of concurrent calls