Parstel

DID is a local telephone numbers for customers on a worldwide basis. That let them to receive calls on their purchased DID number, regardless of their physical presence in that country.

The adventage of using DID services provides people with access to local telephone numbers in most countries on a worldwide basis. These numbers are then forwarded by Parstel to your softphone or device anywhere in the world. it might be also forwarded to your existing fixed or mobile number. Essentially, this means that:

1. International and long distance telephone calls are made with the caller only paying local call rates. For example, your family lives in Tehran, IRAN but you live in Sydney, Australia. You would like your family to be able to phone you, but the long distance rates from IRAN are very costly. If you purchase a Tehran DID, anyone dialing that local number in Tehran would connect to your phone in Sydney, but they would pay only local phone rates.

2. You are able to add telephone numbers to your phone line so that you are no longer restricted to one telephone number per line. For example, you live in Toronto, Canada but you have family in Moscow, London and Beijing. You if you purchase DIDs in Moscow, London and Beijing, then anyone dialing those local numbers would connect to your phone in Toronto.

3. Conventional telephone calls may be terminated at non-PSTN devices if desired, such as VoIP and Skype. This has particular relevance for VoIP communications, as it allows people connected to the traditional PSTN network to call people connected to VoIP networks.

Over and above these basic functions of DIDs, there are many additional uses for local numbers. For example, consider the issue of privacy. If users place classified advertisements in a newspaper and they wish prospective buyers to contact them without publishing their own, private telephone number, a temporary local number could be provided by the newspaper.