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Zadarma
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IP Telephony
- What is it?
- What do you get?
- How to make calls?
- What if my provider blocks VoIP?
- I want my number to be shown as a CallerID
- Dialing format
- How to check the call quality?
- What is a SIP trunk? (authorization via IP)
- How to make outgoing calls to different countries using different phone numbers?
- Free video conferencing
- P-Asserted-Identity (outgoing calls from a chosen number for experienced users)
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Virtual numbers
- Virtual phone number – what is it?
- What virtual number should I connect?
- What documents are required?
- When will my documents be verified?
- How to use one number for several employees?
- How to use a number without internet connection?
- How to identify what number received the call?
- How to connect a number for another provider?
- How to receive calls to your server?
- Why you need call tracking?
- What are numbers with extension dialing?
- How to receive SMS in messengers?
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eSIM
- Does Zadarma's eSIM include a phone number?
- Validity period of the eSIM plan and the amount of traffic used.
- Do I need documents to connect an eSIM and is it possible to get a refund?
- My phone is not in the list of available ones, but I know that the eSIM service is supported.
- Can I buy one eSIM and use it in different parts of the world?
- Can I connect eSIM to another smartphone?
- Is it possible to share the internet via eSIM with other devices?
- eSIM Internet speed and choice of mobile operators.
- How many eSIM cards can be connected to 1 account?
- How to find the eSIM ICCID?
- eSIM installation failed. Error: "Unable to add eSIM. This code is invalid."
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Cloud PBX
- How to make and transfer calls?
- Why do you need a cloud PBX, and how much does it cost?
- Business phone system setup in 5 minutes.
- How to activate and set up Zadarma cloud PBX?
- How to create and set up the extensions?
- Why configure external lines?
- How to turn on the voice menu?
- DTMF (Dual-tone multi-frequency signaling)
- How to set up the incoming calls scenarios?
- Supervisor - call monitoring, barge-in and whispering
- Where can I find PBX statistics?
- Call recording
- How to listen to call recordings
- How to activate the blacklist?
- Setting up automatic number identification (CallerID) for outgoing Calls
- Call forwarding when the employee is offline
- How to receive a fax?
- Temporary PBX switch off
- Conference calls
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Free Zadarma CRM
- What is CRM?
- Terms of free CRM work
- How to connect CRM for free?
- How to connect employee to CRM?
- How to make and receive calls in CRM?
- Why CRM needs a calendar? What events can be added there?
- How to assign a task to an employee?
- How to schedule a client appointment (task) in a calendar?
- How to import contacts to CRM?
- What is a lead?
- How to create a new lead?
- How to route my clients calls directly to me?
- How to integrate CRM with other systems, apps and programs?
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Android program Zadarma
- How to install the app? I have the previous version
- Accepting incoming calls on Xiaomi MIUI phones
- How to know if the app is online? Why I cannot see the app in the background, but the calls are still coming in?
- I have a number from a different operator. Can I use your app for a different VoIP service?
- Zadarma app on Meizu phones
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SMS
What is a SIP trunk? (authorization via IP)
The Session Initiation Protocol (SIP) is a communications protocol for signaling and controlling multimedia communication sessions in applications of Internet telephony for voice and video calls, in private IP telephone systems, as well as in instant messaging over Internet Protocol (IP) networks.
If you create a SIP trunk, you can use any amount of connected phone numbers for the CallerID without any additional setup in your personal profile.
When do you need to use the SIP trunk?
If you have a large call center with multiple Internet channels (one main channel and several back up channels) you can activate the SIP trunk and confirm your IP addresses. In this case, you can only make outgoing calls from the confirmed IP addresses. You will no longer need to enter your login details when you reset your hardware, for example, if the hardware was accidentally reset to its default settings, or if you have logged out by accident. By creating the SIP trunk and connecting new phone numbers, you can use these numbers as your CallerID without the need for any additional setup.
Please, note:
To use the SIP trunk it is essential to have a static IP. After activating the SIP trunk, your SIP login becomes unavailable for registration (receiving incoming calls). Incoming calls can be received using a free SIP login, or without registration using SIP URI.
When using the SIP trunk, authorization is be made via your IP address (without using the login details).
Creating the SIP trunk
- Go to «Settings», «SIP Connection» in your personal profile and click «Add a SIP Trunk».
- Create a name for the SIP trunk and select one of the existing SIP logins. The selected SIP login will be the identifying SIP for your SIP trunk and will become unavailable for the registration (receiving incoming calls).
- Add your static IP address or several IP addresses.
- To confirm the IP address, it is necessary to route the call to number 8888 on sip.zadarma.com server.
- After your IP address is confirmed, you can make outgoing calls by sending us an INVITE with the appropriate CallerID number in the «From:» section. This will simplify the work at our end and will help us understand the work of outgoing routing
INVITE sip:4444@sip.zadarma.com SIP/2.0
From: <sip:442037691880@sip.zadarma.com>
To: <sip:4444@sip.zadarma.com>
The CallerID number in the «From:» section must be in an international format E.164. It can be a phone number purchased from Zadarma or any other confirmed phone number. If the phone number in the «From:» section is entered in the wrong format, we will use the CallerID number set by default in your personal profile’s SIP trunk settings.
For example, if you are using Asterisk, you can set up different CallerIDs depending on your call destination using two lines in extensions.conf:
exten => _4420XXXXXXX,1,Set(CALLERID(num)=442012345678)
same => n,Dial(SIP/zadarma/${EXTEN})
*London CallerID 442012345678 will be used for calls to London landline numbers starting with code 420