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Do you have a question about the Fritz!Box Fon and is the answer not in the manual?

Questions and answers

Bob Runacres
June 15, 2025

One of the two phones connected to my Fritzbox last night started to twitter whilst it was sitting on its charging station. I could not stop the noise and it is unusable. Help please.

Summary of Contents for AVM Fritz!Box Fon

  • Page 2 AVM will not be liable for damages arising directly or indirectly from the use of the manual or related software, nor for incidental or consequential damages, except in case of intent or gross negligence.
  • Page 3: Table Of Contents

    Mounting FRITZ!Box Fon ........
  • Page 4 Updates ..........86 Assistance from AVM Support ....... 86...
  • Page 5: Symbols And Highlighting

    Path and file names in SOFTWARE\INFO.PDF running text or README.DOC Pointed brackets Variables <CD-ROM drive> Typewriter font Information to be typed a:\setup in using the keyboard Gray italics Tips, instructions and ...for more informa- warnings tion, see... FRITZ!Box Fon – Symbols and Highlighting...
  • Page 6: The Telephone Keypad

    “Ext.” used here, enter the number “1”, “2”, or a higher number, corresponding to the extension you would like to configure. XNo. In the place of the abbreviation “XNo.”, enter the complete number of the external line. FRITZ!Box Fon – Symbols and Highlighting...
  • Page 7 The functions and features can be used for analog and ISDN fixed-line connections. The functions and features can be used only for ISDN fixed-line connections. The functions and features can be used only for analog fixed-line connections. FRITZ!Box Fon – Symbols and Highlighting...
  • Page 8: Safety Instructions

    Safety Instructions When working with FRITZ!Box Fon, follow the instructions below to protect yourself and the FRITZ!Box Fon from injury. Do not install FRITZ!Box Fon during an electrical storm. Disconnect FRITZ!Box Fon from the power supply during electrical storms. Never let liquids get inside the FRITZ!Box Fon. Other- wise, electric shocks or short circuits may result.
  • Page 9: This Is Fritz!Box Fon

    Internet, ISDN, or the analog fixed-line network. Connecting One or More Computers FRITZ!Box Fon offers one USB port and one LAN port for con- necting computers. This means you can connect two comput- ers directly to FRITZ!Box Fon. To connect even more comput- ers, a network hub or network switch can be connected to the LAN port.
  • Page 10 In this case FRITZ!Box Fon works as a DSL modem. Protection by the Integrated Firewall When FRITZ!Box Fon is operated as a DSL router, the integrat- ed firewall protects your network from attacks from the Inter- net. Port for Network Devices...
  • Page 11: Package Contents

    4-meter ISDN/analog cable (black) for connecting FRITZ!Box Fon to the ISDN network terminator (NT) or the analog telephone line one USB cable (white) for connecting FRITZ!Box Fon to a computer with a USB interface one network cable (red) for connecting FRITZ!Box Fon to...
  • Page 12: Operation Requirements

    Operation Requirements 1.2 Operation Requirements In order to operate FRITZ!Box Fon, you must have the follow- ing: an ISDN point-to-multipoint line in accordance with the Euro ISDN protocol DSS1, or an analog telephone line a DSL access must be available: Standard ITU G.992.1...
  • Page 13: Fritz!Box Fon Leds

    FRITZ!Box Fon LEDs 1.3 FRITZ!Box Fon LEDs The LEDs on your FRITZ!Box Fon indicate the following condi- tions: Event Type Power shows the operation status of FRITZ!Box Fon remains lit when the device has electrical power and the DSL line is ready for operation...
  • Page 14: Audible Signals

    Firewall and packet filter IP Masquerading/NAT Conform to CE standard 1.5 Audible Signals The following diagram illustrates the duration and intervals of the various handset and ring signals. Handset and ring patterns at FRITZ!Box Fon FRITZ!Box Fon – 1 This Is FRITZ!Box Fon...
  • Page 15: Starting Fritz!Box Fon Operation

    All steps required for connecting and installing the system are described here in the manual and in the Installation Help on the FRITZ!Box Fon CD. Insert the FRITZ!Box Fon CD in your CD-ROM drive so that you can follow the installation instruc- tions on the screen.
  • Page 16: Connecting Fritz!Box Fon To The Power Supply

    Connecting FRITZ!Box Fon to the Power Supply 2.2 Connecting FRITZ!Box Fon to the Power Supply Perform the following steps to connect FRITZ!Box Fon to the power supply: Position your FRITZ!Box Fon so that the sockets on the back panel are facing you.
  • Page 17: Connecting Fritz!Box Fon To Dsl

    Connecting FRITZ!Box Fon to DSL 2.3 Connecting FRITZ!Box Fon to DSL Perform the following steps to connect FRITZ!Box Fon to DSL: Pick up the grey cable. Connect one end of the cable to the socket labeled “DSL”, located at the far left of the back panel of FRITZ!Box Fon.
  • Page 18: Connecting Fritz!Box Fon To Isdn Or The Analog Telephone Line

    Connecting FRITZ!Box Fon to ISDN or the Analog Telephone Line 2.4 Connecting FRITZ!Box Fon to ISDN or the Analog Telephone Line FRITZ!Box Fon can be connected to an ISDN or an analog tele- phone line. To establish a connection, perform the following steps: Pick up the black cable.
  • Page 19: Connecting Analog Terminal Devices To Fritz!Box Fon

    Connecting Analog Terminal Devices to FRITZ!Box Fon FRITZ!Box Fon connected to DSL and the analog telephone line over the DSL splitter 2.5 Connecting Analog Terminal Devices to FRITZ!Box Fon FRITZ!Box Fon has been tested and CE-certified in accor- dance with European Union directives. All analog telecom- munication devices with CE certification can be connected to its extensions.
  • Page 20: Connecting Fritz!Box Fon To The Computer

    Connecting FRITZ!Box Fon to the Computer Connecting an analog telephone to FRITZ!Box Fon 2.6 Connecting FRITZ!Box Fon to the Computer FRITZ!Box Fon can be connected to a computer in two differ- ent ways: via the network port (LAN port) via the USB port A computer can be connected to FRITZ!Box Fon by means of only one of these ports.
  • Page 21: Connecting Fritz!Box Fon To The Lan Port

    If you would like to connect a network to FRITZ!Box Fon in order to connect several comput- ers with DSL, then connect FRITZ!Box Fon to a network hub or switch using the LAN cable.
  • Page 22 Connecting FRITZ!Box Fon to the LAN Port of a Computer Connecting FRITZ!Box Fon to the LAN Port of a Computer You will need the red LAN cable for this step. Connecting FRITZ!Box Fon to a computer’s network adapter Once the FRITZ!Box Fon has been connected to the pow- er mains and DSL as described on page 16, switch on your computer.
  • Page 23 Connecting FRITZ!Box Fon to a Network Hub Connecting FRITZ!Box Fon to a Network Hub Connect FRITZ!Box Fon to the power supply and to DSL as described on page 16. Connect one end of the red LAN cable to the uplink port of the network hub or switch.
  • Page 24: Connecting Fritz!Box Fon To The Usb Port Of A Computer

    An operating system version of 10.3.3 or higher is required to connect FRITZ!Box Fon to the USB port of an Apple Macin- tosh computer! If your Apple Macintosh computer works with an older version, connect FRITZ!Box Fon via the LAN port of your computer.
  • Page 25 Connecting the USB Cable Connecting FRITZ!Box Fon to the USB port of a computer Pick up the USB cable and plug the flat connector into a free USB port on your computer. Then plug the square connector into the socket labeled “...
  • Page 26 The Windows XP “Found New Hardware Wizard” starts. Follow the instructions displayed on the screen. A message appears: “The wizard has finished installing the software for ‘AVM FRITZ!Box Fon’”. Confirm by click- ing “Finish”. Please see the instructions in the section “Opening the User Interface”...
  • Page 27 User Interface” on page 30. Installing FRITZ!Box Fon in Windows 98 Insert the FRITZ!Box Fon CD in your CD-ROM drive to start the Installation Help automatically. If the Installation Help does not start automatically, open the INTRO.HTM file on the FRITZ!Box Fon CD.
  • Page 28 Confirm the message by clicking “OK”. Under “Show”, select the new port found, “Ethernet port en<No.>”. Confirm your entries with “Activate Now”. Please see the instructions in the section “Opening the User Interface” on page 30. FRITZ!Box Fon – 2 Starting FRITZ!Box Fon Operation...
  • Page 29 Installing FRITZ!Box Fon in a Linux Operating System The example of SUSE Linux 9.1 is used here to describe how to install FRITZ!Box Fon to the USB port in Linux. You have to be logged in as “root” to configure the neces- sary settings.
  • Page 30: Opening The User Interface

    Opening the User Interface 2.9 Opening the User Interface Once you have connected FRITZ!Box Fon with a computer, or with a network hub or switch, you can access the FRITZ!Box Fon user interface. Open an Internet browser and enter “fritz.box” in the ad- dress field.
  • Page 31 If the user interface does not open, see the instructions in the section “Errors Opening the User Interface” from page 49. For instructions about how to set up FRITZ!Box Fon for Inter- net connections and Internet telephony, see the sections “Configuring FRITZ!Box Fon for Internet Connections” from page 32 and “Configuring FRITZ!Box Fon for Telephone Con-...
  • Page 32: Configuring Fritz!Box Fon For Internet Connections

    It is not necessary to install any additional Internet access software on the other connected com- puters. In this mode FRITZ!Box Fon works like a DSL router and uses the Internet Service Provider’s account informa- tion. For information about how to configure FRITZ!Box Fon for this operating mode, see the section “FRITZ!Box...
  • Page 33: Fritz!Box Fon Uses The Internet Service Provider's Account Information

    3.1 FRITZ!Box Fon Uses the Internet Service Provider’s Account Information For FRITZ!Box Fon to establish Internet connections itself, you must set up an Internet connection in the FRITZ!Box Fon user interface, entering the Internet account information from your Internet Service Provider.
  • Page 34: Dialing An Internet Connection

    Make sure FRITZ!Box Fon automatically assigns IP addresses to all computers that are supposed to use this Internet con- nection. For instructions, see the section “IP Settings” from page 44. FRITZ!Box Fon – 3 Configuring FRITZ!Box Fon for Internet Connections...
  • Page 35 If you connected multiple computers with FRITZ!Box Fon and would like to allow Internet access for all of them, it is advisable to operate FRITZ!Box Fon as a DSL router (see “FRITZ!Box Fon Uses the Internet Service Provider’s Account Information” on page 33).
  • Page 36: Configuring Fritz!Box Fon For Telephone Connections

    If you would like to use the features and convenient func- tions of FRITZ!Box Fon on an ISDN line and make phone calls with FRITZ!Box Fon over the Internet on the DSL line, you must configure the PBX in the FRITZ!Box Fon user interface.
  • Page 37: Configuring Fritz!Box Fon For Internet Telephony And Calls On Fixed Lines

    Configuring FRITZ!Box Fon for Internet Telephony and Calls on Fixed Lines 4.2 Configuring FRITZ!Box Fon for Internet Telephony and Calls on Fixed Lines This chapter describes how to set up FRITZ!Box Fon for tele- phone connections over the Internet and for calls using the fixed-line network.
  • Page 38 “FON1” line should react for incoming calls. To ensure that the terminal device at the “FON1” exten- sion reacts only to incoming calls to the specified num- bers, disable the option “react to all numbers”. FRITZ!Box Fon – 4 Configuring FRITZ!Box Fon for Telephone Connections...
  • Page 39 Click the “New Dialing Rule” button to define as many dialing rules as desired. Click the “Apply” button. FRITZ!Box Fon – 4 Configuring FRITZ!Box Fon for Telephone Connections...
  • Page 40: Useful Tips For Internet Telephony With Fritz!Box Fon

    Internet tele- phony that is inferior to that in fixed-line telephony. Clearing Internet Connections Automatically If you use FRITZ!Box Fon for Internet telephony, disable the “Clear Internet connection automatically” option in the “Internet / Account Information” menu to prevent a connection from being cleared during a call over the Internet.
  • Page 41 Useful Tips for Internet Telephony with FRITZ!Box Fon With a fully configured FRITZ!Box Fon you can receive tele- phone calls as follows: on your fixed-line number from the fixed-line network on your fixed-line number from the Internet on your Internet number from the Internet For more information about configuring FRITZ!Box Fon, see the Online Help in the FRITZ!Box Fon user interface.
  • Page 42: Removing The Fritz!Box Fon

    If FRITZ!Box Fon is connected to one or more computers wirelessly via WLAN, no uninstallation is required. If FRITZ!Box Fon was installed at the USB port of the computer, uninstallation must be performed in the Windows operating systems.
  • Page 43: Guidebook

    DHCP server 6.1 Linking Up the Cable Network Extending the length of the FRITZ!Box Fon cables is no prob- lem. Cables of the desired length can be purchased at any computer store. Be sure to note the type of cable, and remember that the quality of the line may decrease as the distance from the hub increases.
  • Page 44: Ip Settings

    Go to “start / Control Panel / Network and Internet Con- nections / Network Connections” and double-click the LAN connection icon of the network adapter connected to FRITZ!Box Fon in order to open the “Local Area Con- nection Status” window. Click the “Properties” button.
  • Page 45 Select “Start / Settings / Control Panel”. Double-click the “Network” entry to open it. In the list, double-click to select the binding designated with an arrow, “TCP/IP -> <network adapter bound to FRITZ!Box Fon>”. FRITZ!Box Fon – 6 Guidebook...
  • Page 46 The “Obtain an IP address automatically” option On the “DNS Configuration” settings page, activate the “Disable DNS” option. The “Disable DNS” option Confirm your selection by clicking “OK”. The computer now receives an IP address from FRITZ!Box Fon. FRITZ!Box Fon – 6 Guidebook...
  • Page 47 Select “Start / Settings / Control Panel / Network and Dial-up Connections”. Double-click to select the Local Area Network connec- tion with the network adapter bound to FRITZ!Box Fon. Click the “Properties” button. Double-click to select “Internet Protocol (TCP/IP)” in the list of network components.
  • Page 48 In the “Network” window, select the “Built-in Ethernet” entry from the “Show:” drop-down menu. Switch to the “TCP/IP” settings page and select the “Us- ing DHCP:” option from the “Configure” drop-down menu. Click “Apply Now”. FRITZ!Box Fon – 6 Guidebook...
  • Page 49: Errors Opening The User Interface

    LAN Connection FRITZ!Box Fon has a fixed IP address, which cannot be changed and which can be used to access FRITZ!Box Fon at any time. This fixed IP address is: 192.168.178.254 Proceed as follows to reach the FRITZ!Box Fon user interface...
  • Page 50: Dhcp Server

    (if it originally was connected to USB). 6.4 DHCP Server FRITZ!Box Fon is equipped with its own DHCP server. In the factory settings, the DHCP server and the setting “All com- puters are located in the same IP network” are enabled by default.
  • Page 51 The settings “All computers are located in the same IP net- work” specifies whether all of the computers connected with FRITZ!Box Fon are located in the same IP network or in differ- ent IP networks. “All computers are located in the same IP network” Is...
  • Page 52 The address may not be from the following address range: 192.168.180.1 - 254 This address range is reserved in FRITZ!Box Fon for internal purposes. If the DHCP server is enabled, the addresses between 20 and 200 in the fourth block of the IP address are re- served in an IP network for the DHCP server.
  • Page 53 IP address range of the DHCP server. The DHCP Server of FRITZ!Box Fon is Disabled When the DHCP server of FRITZ!Box Fon is disabled, every computer connected to FRITZ!Box Fon must be assigned a fixed IP address. Otherwise FRITZ!Box Fon cannot be reached.
  • Page 54 DNS server: 192.168.178.1 The Option “All computers are located in the same IP network” Is Not Enabled In this case the computers connected with FRITZ!Box Fon over the same interface are located in the same IP network: Interface Settings Address IP Address Range: 192.168.179.2-250...
  • Page 55: Configuration And Operation By Telephone

    Configuration and Operation by Telephone 7 Configuration and Operation by Telephone Many of the FRITZ!Box Fon functions and features can be configured and used over a telephone connected to a FRITZ!Box Fon extension. Only tone-dialing (dual-tone multi- frequency = DTMF) telephones can be used in configuration and operation.
  • Page 56: Operating Fritz!Box Fon By Phone

    Operating FRITZ!Box Fon by Phone 7.1 Operating FRITZ!Box Fon by Phone This section describes how you can use the FRITZ!Box Fon features via your telephone keypad. Shortening the Dialing Procedure FRITZ!Box Fon automatically recognizes when a number has been entered, but not until a few seconds after the final dig- its are entered.
  • Page 57 You now hear the internal dial tone. Dial the desired extension number. Dialing Internal Calls Without Automatic Outside Dialing Pick up the handset. You hear the internal dial tone. Dial the desired extension number. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 58 Group Call Group Call The “Group Call” feature of FRITZ!Box Fon allows you to ring all other extensions at the same time. To do so, you must first configure the extension for internal dialing. Your call is connected with whichever extension answers first.
  • Page 59 To pick up a call from another extension, proceed as follows: Pick up the handset. Dial the sequence shown at left. The call is now connected to your extension, and you can talk to the caller. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 60: Transferring Calls

    Transferring Calls The “Call Transfer” function allows you to transfer a connec- tion from one of FRITZ!Box Fon extension’s to the other. To do so, proceed as follows: Call No. 1 You are talking to Caller No. 1.
  • Page 61 In this case, your phone rings as soon as you hang up. Pick up the handset to return to Call No. 1 again. Hang up the handset to end the connection. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 62: Configuring Fritz!Box Fon By Phone

    In this section, saving refers to all current settings. It is not necessary to save the configuration after each setting is made. You may first configure all of your FRITZ!Box Fon’s set- tings as desired, and then save them permanently.
  • Page 63 Enabling Call Waiting Pick up the handset. Ext. Dial the sequence shown at left. r91ss Save your settings if desired by dial- ing the sequence shown at left. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 64 Dial the sequence shown at left. Type in the number of the extension in the “Ext.” field. r91ss Save your settings if desired by dial- ing the sequence shown at left. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 65 Dial the number of the extension to listen in at an extension with room monitoring activated. After initiating a baby monitoring phone call, the PBX cannot generate a new call until at least one minute has lapsed. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 66: Advanced Features Of Fritz!Box Fon

    Internet numbers. You can specify the conditions under which an incoming call will be diverted over FRITZ!Box Fon. You can select one of six different options. Different settings may be saved for each extension.
  • Page 67 Disabling Call Diversion Pick up the handset. Ext. Dial the sequence shown at left. r91ss Save your settings if desired by dial- ing the sequence shown at left. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 68 Three-Party Conference Call Three-Party Conference Call FRITZ!Box Fon allows you to hold telephone conferences with two other people at once. Two external and one internal par- ty, or two internal and one external party can conduct a con- ference call with each other.
  • Page 69: Features Of The Telephone Network

    Internet number. In addition to call forwarding, there is also call diversion via FRITZ!Box Fon. Use this kind of call diversion to divert calls to internal and external lines. See the section “Call Diversion over FRITZ!Box Fon” from page 66 for more information.
  • Page 70 Hang up the handset. Call Forwarding Immediately for All MSNs Pick up the handset. s21s XNo. Dial the sequence shown at left. Wait for the acknowledgement tone. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 71 You can also define call diversion for any other number, e.g. a tele- phone at the other extension of FRITZ!Box Fon, or for all num- bers. All settings can be disabled at any time.
  • Page 72 Hang up the handset. Call Forwarding When Busy for Any MSN Pick up the handset. s67ss Dial the sequence shown at left. Wait for the acknowledgement tone. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 73 ID (the first number assigned to an extension), for any number (for instance, a telephone at the other FRITZ!Box Fon extension), or for all numbers. All settings can be disabled at any time. Call Forwarding Delayed for Your Extension’s Outgoing Caller ID Pick up the handset.
  • Page 74 The CLIR function is disabled in the factory settings. You have the option of enabling this function permanently and then disabling it again. CLIR can also be used for individual connections. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 75 Dial the sequence shown at left. Type in the number of the extension in the “Ext.” field. r91ss Save your settings if desired by dial- ing the sequence shown at left. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 76 Transmission of the connected line’s number can be switched on and off for each extension individually. Trans- mission of the connected line’s number is permanently enabled in the PBX factory settings. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 77: Call Waiting

    You can accept the connection with the new caller within 30 seconds. If you ignore the signal, the waiting call is rejected after 30 seconds. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 78 Dial the sequence shown at left. The connection on hold and the active connection are connected with each other. The external parties continue the call while you clear the connection. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 79 Dial the sequence shown at left. The connection on hold and the active connection are connected with each other. The external parties continue the call while you clear the connection. Hang up the handset. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 80 PBX. This means that both B channels on your ISDN line remain busy with this connec- tion as long as the parties are connected to each other. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 81 This feature is supported for both external and internal con- nections. This command can be activated five times for each port. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 82 Dial the sequence shown at left. Type in the parked-call ID as “PC”. The parked-call ID can be any number between 0 and 99. You will need to enter this ID again when you resume the call. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 83 Call Tracing (MCID) During a call or after the caller hangs up, dial the following sequence: Rs39r Dial the sequence shown at left. For more information about this feature, contact your ISDN provider. FRITZ!Box Fon – 7 Configuration and Operation by Telephone...
  • Page 84 Using Keypad Messages Using Keypad Messages FRITZ!Box Fon offers the “keypad” function. This function al- lows ISDN services and features to be controlled by entering characters and strings on the telephone keypad. These key- board entries are called keypad messages. Keypad sequenc- es allow you to use ISDN services and features that may not be supported by your ISDN terminal device.
  • Page 85: Information, Updates And Support

    The Readme contains the latest information which was not yet available at the time the manual was printed. The Readme file is included on the FRITZ!Box Fon CD and in the “FRITZ!Box Fon” entry in the start menu. Help for FRITZ!Box Fon In the FRITZ!Box Fon window you can open the detailed Online Help by clicking the “Help”...
  • Page 86: Updates

    FRITZ!Box Fon. The support desk can be reached by e-mail or by fax. AVM Support then will contact you to assist in solving your prob- lem.
  • Page 87 Assistance from AVM Support Select the product for which you require technical support. Fill out the form and send it to AVM Support by clicking the “Send” button. Support by Fax If necessary, you can reach AVM Support at the fax number:...
  • Page 88: Index

    CCNR, see fax machine call-back on no response firewall clear Internet connection firmware automatically FRITZ!DSL CLIP, see enabling the display of the incoming caller ID (CLIP) CLIR, see game console suppressing caller ID game consoles group call FRITZ!Box Fon – Index...
  • Page 89 ID suspend/resume switch keypad messages technical specifications LAN port telephone LEDs transferring calls Mac OS X updates MCID, see USB cable call tracing USB connector USB port user interface network cable network hub warranty FRITZ!Box Fon – Index...
  • Page 90: Declaration Of Ce Conformity

    EN 300 328-1/7.2001, EN 300 328-2/7.2001 ETSI TS 101 388, ITU-T G.992.1, ITU-T G.994.1, ETSI ETR328 The CE symbol confirms that this product conforms with the above mentioned norms and regulations. Berlin, 19/05/2004 Peter Faxel, Technical Director FRITZ!Box Fon – Declaration of CE Conformity...

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