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- Knowledgebase
- General Information
- DIDWW Coverage
- What is a DID?
- About DIDWW
- Country-specific Number Dialing Recommendations
- Ring and Hunt Groups
- Can I Order Services Online?
- How Do I Configure a DID to Forward Calls to a Selected Remote Device?
- Do I Have Access to My Call Records?
- Why would I Use a DID?
- Why is a DID Sometimes Referred to as a Virtual Number or Virtual Private Number?
- Who May Use the Service?
- What Additional Features are Supported?
- To What Devices Can I Forward Calls?
- How Do I Get Support?
- Can I Change Call Forwarding Destination of DID?
- Can I Choose any Number I Want?
- Can I Use DIDWW Numbers for Receiving Fax?
- Is there a Maximum Call Duration per DID?
- Can I Make Outgoing Calls From DIDWW Virtual Number?
- How Can I Modify My Caller ID?
- Do the DIDs Support Collect Calls?
- What is DTMF (Dual Tone Multi Frequency)?
- Does DIDWW Provide Voice Answering/Voicemail services?
- Is It Possible To Set A Recording Which Will Answer Calls after Business Hours?
- What is IVR (Interactive Voice Response)?
- In Which Time Zone The Call Records Are Shown?
- Does DIDWW Provide Toll-Free Numbers?
- What Is The Difference Between National DIDs And Local DIDs?
- Can I Have a Voicemail for DIDWW DID Number?
- Billing and Prices
- How can I Change My Credit Card Information
- When Do I Pay the Setup Fee?
- How Can I Change the Payment Method?
- How Do I Pay for the DID?
- How Much does a DID Cost?
- How do I Select and Buy a DID?
- Do I Pay Per-Minute Charges?
- Is There a Registration Fee or Membership Fee for Using the DIDWW Services?
- What Currency Can Be Used For Payments?
- What Are The Costs of Additional Channels?
- Information for Resellers
- How Can I Build Application for DIDWW API Using ASP.NET?
- What is the Pricing Plan for Resellers Using the DIDWW API?
- How Many DIDs Can I Purchase at Sandbox API?
- Does DIDWW API Supports CDRs (Calls Log)?
- Which Mappings are Supported by DIDWW API?
- What are the Differences between Sandbox API and Production API?
- Why There is Difference between the Coverage List of the API and the Website?
- What is an API (Application Program Interface)?
- How Do I Access the Production API?
- Is it Possible to Implement the API in any Language?
- Which Authentication String do I Need to use for accessing the API?
- Do Resellers Need to Pay Setup Fee?
- Does DIDWW has an API that I Can Integrate into my Website or Application?
- Do you Have ASP Example of Automatic DID Purchase for Resellers?
- How Can I Become a Reseller of Local Numbers and Services Provided by DIDWW?
- General Information on DID API
- Number Portability, Legal Restrictions and Limitation
- Number Capacity - Voice Channels/Lines
- What is the Difference between Flexible (shared) and Dedicated (non-shared) Channels?
- What is Flexible (shared) Channel?
- How to Add Additional Flexible Channels?
- What is Dedicated (non-shared) Channel?
- How Can I Add More Channels To My DID Number?
- What is a Channel?
- For which Countries Can I Buy Additional Channels?
- Why would I Need Multiple Channels per DID?
- Can Additional Channels be Shared by all the DIDs in my Group?
- How Many Channels Are Included When I buy a DID?
- Can I buy Additional Channels for my DIDs?
- Call Forwarding – Number Mapping
- Custom & URI
- PSTN
- Which Countries Support Call Forwarding to PSTN?
- Can I Forward Calls from a DID Number to Mobile Phone?
- Can I purchase a DID number and forward it to another country’s land line/mobile phone?
- Can I Map My DID Number to a Toll Free Number?
- Can DID Be Used For Calling From A Standard Telephone To Another Telephone?
- Can I Forward Calls From DID to PSTN (a regular telephone number) In Any Country In The World?
- Why Do I Have Only One Channel?
- Can I Change The Number in PSTN Mapping to Another PSTN Number?
- What is PSTN (regular phone) forwarding?
- Can I use my WiFi mobile (trough my VoIP account) to use your DID number?
- Can I Send SMS From DIDWW Virtual Mobile Number?
- VoIP
- H.323
- IAX
- SIP
- I Cannot Map My Number to a SIP Account
- DID number which Mapped to VoIP (SIP) is not Working
- SIP with firewall/NAT using Asterisk
- How do I Define the CODEC which I Want to Use in DIDWW SIP Trunks?
- Is it Possible to Set Two Different Mappings to Different SIP Servers, for Backup Purposes?
- How does my SIP Server can Identify the Calls?
- Can I Use 3rd Party SIP Services such as Callcentric.com, Sipgate.com or Phonegnome.com?
- Is it Possible to Forward an Incoming DID Number to the SIP Server of my VoIP Provider?
- Can you Recommend on a Free SIP Server that Works on Linux?
- Do DIDWW Systems Accept Non-Standard SIP Ports Such as 5070?
- How Do I Configure my SIP Phone to Work with DIDWW?
- How to Set SIP Trunk Configuration for DIDWW DID Number on Asterisk?
- Asterisk
- How can I Use 3-rd Party SIP Services?
- One Way Audio when Calling the DID
- When the Caller Calls with the G729 CODEC, the Callee Always Answers in G711
- Problem when the Call Originated with the G729 CODEC
- I Cannot Receive Calls when the DID is Mapped to CallWithUs VoIP Provider
- How Can I Ensure the CODEC for Calls to my DID?
- Which Ports Do I Need to Open on My Firewall for the RTP Packets?
- Does DIDWW Support DNS SRV?
- Will I Receive Calls From Any Of Your IP Addresses?
- Can I Choose the Server which is Sending me the Calls when Purchasing DID?
- Which DTMF Type I Need to Set in my IVR/PBX in Order to Recognize the Digits?
- How to Set Dial Peer Configuration on Cisco Voice Gateway Routers?
- Which CODEC does DIDWW support?
- Can I Map VoIP Provider that is not In the Tested Providers in another Way?
- What Kind of DTMF Signal DIDWW Supports?
- Do I Need fixed IP for Using the DID on VoIP Phones?
- Add your VoIP Provider to the Predefined List
- Which VoIP Providers DO NOT Support DIDWW Services?
- Which VoIP Providers Support DIDWW Services?
- Troubleshooting
- Mapping
- Receiving Calls
- Account Management
- DTMF
- I Cannot Receive DTMF Packets, Using NMS Communication Software
- I Changed my default DTMF Mode to RFC2833 but I Still Having Problems with the DTMF (Using Asterisk)
- When Dialing the DID Number using the Asterisk Application Gets some of the Digits Twice
- After Call Connection Some Digits are not Received (DTMF Does Not Work)
- Step By Step Guides
- DID Reservation
- How can I Change My Credit Card Information
- How To Buy DID at DIDWW?
- How To Map Existing DID Number?
- How Do I Change My Password?
- How Do I Change My Contact Email Address?
- How Can I View The Calls I Made?
- Can I map VoIP provider that is not in the tested providers in another way?
- How to set Asterisk@Home/TrixBox with DIDWW DID numbers?
- VoIP Phone Setup Guide
- General Information
- FAQ
- Terms & Agreements
- Contacts
- Privacy Policy

