What is a SIP phone number

March 16, 2015 (updated December 04, 2020) Created by Jennifer Schmitz Endgeräte

Setting up your SIP phone

If you would like to use your virtual telephone system, you must first set up your SIP or IP telephone.

The prerequisite for using your IP telephone is a broadband connection, access to the Internet via a router and the access data for registering and setting up your SIP account from your provider.

You should have the following data at hand before the configuration, which you will receive from your provider:

  • Your account (also called account or "Identities" for snom devices), usually your phone number
  • The registrar
  • The password

In addition, your IP telephone can query the following things during setup:

  • Username (usually [email protected])
  • Authentication name
  • Outbound proxy
  • Answering machine account

As a rule, VoIP telephones, such as the snom 710, are plug & play. After connecting to the network, the IP phone should start initializing immediately. However, if it does not recognize the DHCP server, the initialization does not take place automatically. You then have to enter the IP address and the IP gateway as well as the DNS server manually. You can also obtain this data from your provider or your network administrator.

The phone usually asks you to make some basic settings, such as language and time settings, setting the ring tone, registering the account, etc. You can skip time and ring tone settings for the time being and with the registration of your SIP phone Continue. To do this, you have to enter the account (usually your telephone number), the registrar and the password received from the VoIP provider. Your phone will now register. This process can take several minutes. You should not press any keys during this time in order not to interrupt the registration process.

However, it is more convenient to set up your SIP account via your web browser. To do this, you need to press the cancel button on your IP phone for a few seconds. On the snom 710, which is an example of other IP telephones, the cancel button is the button marked with an "X". To set it up in the browser, you also need the IP address of your SIP telephone. With the snom 710, first press key 6 for “Information” and then key 2 for “System”. How it behaves with your SIP telephone, please refer to your user manual. Enter the displayed IP address in the address line of your web browser. This will take you to the configuration menu of your IP telephone, in which you can make all the necessary settings. You should protect this administrator interface with a password to protect it from unauthorized access.

If registration and initialization have not taken place, it is possible that you need further data from your VoIP provider that was not queried during the process and has not yet been preset on the IP telephone. Enter this data in the phone's browser under "Configuration Identity 1".

Auto provisioning: Use the offers of your VoIP provider

Of course, you also have the option of using your VoIP prodider's auto-provisioning. Here your provider delivers the IP telephone already set up. All you have to do is plug it in. With fonial, it's even easier: you simply enter the MAC address of your phone into your fonial customer account, restart it and it's all set up!

SRTP: No VoIP provider offers this encryption as standard

SRTP is an encryption of the transmission and for the security conscious a great function of the phone. As a rule, however, you can deactivate this encryption because most VoIP providers do not offer this protocol at all by default.

Useful functions: The setup for BLF

BLF is an abbreviation for “Busy Lamp Field” or “busy lamp field”. You can assign this function to the configurable context-sensitive function keys of your SIP telephone. This function enables you to query the status of an extension: The integrated LED lamp on the button shows you whether the connection is currently busy or is being called. With some telephones it is possible to answer incoming calls with the push of a button.

Set up BLF on the snom 710 as follows:

Select the phone configuration menu in your web browser. Then go to the menu item where you can configure your function keys. With the snom 710 this menu item is called "Function Keys". You will now see a table-like structure. To the right of this you can see the designation of the function keys P1, P2, P3… P (n). In the first column, set the "context" of the key to which you want to assign the BLF function to "Active". Then select the "BLF" function in the "Type" drop-down menu. In the next field ("Number") you have to enter the destination connection. Which designation you have to insert there depends on your provider. In some cases you have to specify sip: extension @ IP address of the target telephone (e.g. [email protected], alternatively it is sip: extension @ provider (e.g. sip: [email protected]).

Whether BLF is available to you depends on your telephone system and your VoIP provider. This function is included in our fonial PLUS product.

You can find out more about setting up your IP telephone in our help.


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