# Common Virtual Mobile Number questions: VMN additional product, SIP Trunk, CrazyPBX, CIS, SMS, and CrazyPhone

> Category: General
> Canonical URL: https://crazytel.com.au/knowledgebase/article/common-virtual-mobile-number-questions

Common Virtual Mobile Number (VMN) questions. A Virtual Mobile Number is an additional product and add-on. You still need a SIP Trunk or CrazyPBX to make calls and receive calls. There is no Critical Information Summary (CIS) and no CIS for Virtual Mobile Numbers. Sending SMS is 5 cents (5c) per SMS. CrazyPhone unlimited SMS add-on is $4.95 a month for unlimited SMS to Australian numbers with the CrazyPhone app.

# Common Virtual Mobile Number (VMN) questions

A Crazytel Virtual Mobile Number (VMN) is an additional product and add-on, not a named plan. A virtual mobile is just the number. It is not a phone system. It does not include SIP Trunk minutes or CrazyPBX seating. You still need a SIP Trunk or CrazyPBX to make calls and receive calls.

Virtual Mobile Numbers have no Critical Information Summary (CIS). There is no dedicated Virtual Mobile CIS. Sending SMS is 5 cents (5c) per SMS on all plans. The CrazyPhone unlimited SMS add-on is $4.95 a month for unlimited SMS to Australian numbers with the CrazyPhone app.

## What is a Virtual Mobile Number?

A Virtual Mobile Number (VMN), also called a virtual mobile, is a Crazytel phone number. It is an additional product and add-on. You buy the number. You do not get a phone system, SIP Trunk minutes, or CrazyPBX seating with the number alone.

A Crazytel physical SIM or Optus SIM is a different product. A VMN is just a phone number. It is not a SIM card and it is not a mobile plan.

See [How to Buy a Number](https://crazytel.com.au/knowledgebase/article/how-to-buy-a-number) if you need to order a Virtual Mobile Number.

## Do I need a SIP Trunk or CrazyPBX with a Virtual Mobile Number?

Yes. A Virtual Mobile Number does not let you make calls or receive calls on its own. You still need a SIP Trunk or CrazyPBX plan.

- A SIP Trunk gives you SIP calling and plan minutes.
- CrazyPBX is a hosted phone system with seating.

The VMN is only the number you point at that SIP Trunk or CrazyPBX service. See [SIP Trunks vs CrazyPBX](https://crazytel.com.au/knowledgebase/article/sip-trunks-vs-crazypbx) if you are choosing a plan.

## Is there a Critical Information Summary for Virtual Mobile Numbers?

No. Virtual Mobile Numbers have no Critical Information Summary (CIS). There is no CIS for a VMN because a Virtual Mobile Number is an additional product, not a named plan. There is no dedicated Virtual Mobile CIS. Crazytel does not publish a VMN CIS PDF.

Named plan CIS files (home, business SIP, CrazyPBX) live with the other legal documents. See [Legal Documents Repository](https://crazytel.com.au/knowledgebase/article/legal-docs).

## How much does SMS cost on a Virtual Mobile Number?

Sending SMS is 5 cents (5c) per SMS on all plans. That 5c SMS rate is the standard Virtual Mobile Number SMS price.

The 5 cents per SMS rate is not a mobile SIM plan rate. A Crazytel physical SIM or Optus SIM is a different product.

See [SMS Message Costs](https://crazytel.com.au/knowledgebase/article/sms-message-costs) for character limits and how SMS is billed.

## What is the CrazyPhone unlimited SMS add-on?

CrazyPhone is an optional add-on. It costs $4.95 a month for unlimited SMS to Australian numbers with the CrazyPhone app.

Without the CrazyPhone add-on, sending SMS is 5 cents (5c) per SMS. The CrazyPhone unlimited SMS add-on is for customers who send a lot of SMS to Australian numbers from the CrazyPhone app.

## Is a Virtual Mobile Number the same as a Crazytel physical SIM or Optus SIM?

No. A Virtual Mobile Number (VMN) is just a phone number. A Crazytel physical SIM or Optus SIM is a different product. The SIM is a mobile service. The VMN is an additional product you attach to a SIP Trunk or CrazyPBX plan.

## Does a Virtual Mobile Number include call forwarding minutes?

No. Call forwarding is a separate topic. A Virtual Mobile Number does not include forwarded minutes as plan minutes. A VMN is just the number. Forwarding is set up on the SIP Trunk or CrazyPBX service that uses that number.

## Related guides

- [Virtual Mobile Numbers for WhatsApp, Google, banks, and 2FA](https://crazytel.com.au/knowledgebase/article/virtual-mobile-numbers-whatsapp-google-banks-2fa)
- [SMS Message Costs](https://crazytel.com.au/knowledgebase/article/sms-message-costs)
- [How to Buy a Number](https://crazytel.com.au/knowledgebase/article/how-to-buy-a-number)
- [SIP Trunks vs CrazyPBX](https://crazytel.com.au/knowledgebase/article/sip-trunks-vs-crazypbx)
- [Legal Documents Repository](https://crazytel.com.au/knowledgebase/article/legal-docs)