Usually, you will get your virtual numbers from a SIP trunk provider. (Not PSTN/ISDN provider) There are many uses, some ideas are:
- Virtual phone numbers can be used to track response rates from specific marketing campaigns.
- If your office is in China and you want Singapore businesses to reach you, you can purchase a Singapore number so that when people are calling that number, your China office phone or Linkus will ring.
- Alternatively, say if you are a Singapore business and want to expand to Germany, you can purchase a German virtual number, so that people from Germany can call that number, your Singapore office phone or Linkus will ring.