Factory reset: all models

This page is a cheat sheet: how to return any phone from our guides to factory settings, one card per brand. Detailed steps with screens, per-model variants and caveats are on the brand page — the link at the end of each card. Common credentials and network — in the overview.

Cannot find your model in the table? Look it up with the search on the overview: it shows which family the model belongs to.

When a reset is needed#

• The phone is second-hand or came from a previous provider. It still holds someone else's accounts and, above all, the address of someone else's auto-provisioning server: the phone will download the old configuration and overwrite yours after every reboot. The symptom is “I set it up, it worked, next morning it does not register again”.
• The web interface admin password is forgotten. It cannot be recovered — only reset.
• The phone behaves oddly after a firmware update or experiments with the settings.

What a reset does not fix: a wrong login or password from the admin panel (just enter them again), SIP ALG on the router, no audio while the dot is green — that is the network, see “Phone not working: troubleshooting”.

What to check before the reset#

1. Static IP and VLAN. If a network administrator set them on the phone, write the values down: after the reset the phone will ask DHCP for an address again.
2. A provider's phone. A device issued by a telecom operator may be “bound” to its auto-provisioning server by MAC address — after the reset it will download the foreign configuration again. Ask the provider to release the device, otherwise the reset will not help.
3. DECT. The base and the handsets are reset separately; after resetting the base, the handsets have to be paired with it again.
4. Do not cut the power while the reset is running: on most devices it takes from a minute to several minutes and ends with a reboot.

How to reset: all brands#

First — a short table for the most common case: the admin password is lost, how to reset and what login you get afterwards. Below it — a card for every brand with all methods: on the device when the password is known; without the password — a button on the case, a long key press or a keypad code; from the web interface. “—” means the brand has no such method or the manufacturer does not describe it.

Yealink T1x–T5x and CP9xx#

• On the device (password known): Menu → Settings → Advanced Settings (password admin) → Reset Config → Reset to Factory Settings (colour models: Menu → Advanced)
• If the password is lost: While idle, hold OK for ~10 s → confirm with OK (unless the administrator disabled this option)
• From the web interface: Settings → Upgrade → Reset to Factory → OK
• Login after reset: admin / admin
• Note: Reset Local Settings next to it is NOT a full reset, it only clears manual changes

Steps with screens on the brand page →

Yealink W5x/W6x/W7x (DECT)#

• On the device (password known): From a handset: OK → Settings → System Settings → Base Reset → base PIN 0000 → Reset to factory → Yes
• If the password is lost: —
• From the web interface: Settings → Upgrade → Reset to factory → OK
• Login after reset: admin / admin; system PIN 0000
• Note: Handset pairing survives the base reset; a handset is reset separately (Handset Reset)

Steps with screens on the brand page →

Grandstream GRP26xx / GXP / WP8xx#

• On the device (password known): GRP26xx: Menu → System → Operations – Factory Reset → Yes (GXP16xx: Menu → System → Factory Reset → OK)
• If the password is lost: GRP26xx, GXP21xx: hold 1 + 9 while booting → Factory Reset → Submit (on GXP21xx confirm with #)
• From the web interface: GRP26xx, WP8xx: Maintenance → Tools → Factory Reset → Start; GXP16xx/GXP21xx: the reset button in the top right corner
• Login after reset: admin / admin or the label password (per model); on GRP26xx use Login From LCD
• Note: On GXP21xx the 1 + 9 combination asks for the admin password if menu access is restricted

Steps with screens on the brand page →

Grandstream DP7xx (DECT)#

• On the device (password known): Handset: Menu → Settings → System Settings → Factory Reset → Yes
• If the password is lost: Base: hold Radio/Page for ~30 s, do not release after 8 s (the handset subscription window opens)
• From the web interface: Base: Maintenance → Factory Reset → Reset Type → Reset → OK
• Login after reset: admin / the password on the base label (DP750 before hardware 1.7A: admin); base PIN 0000
• Note: The base and each handset are reset separately: each keeps its own settings

Steps with screens on the brand page →

Grandstream HT80x/HT81x (ATA)#

• On the device (password known): Unplug the network cable, press the RESET hole on the back with a pin for ~7 s
• If the password is lost: IVR: handset → *** → 99 → the label MAC as digits (A=22 … F=3333)
• From the web interface: BASIC SETTINGS → Reset Type: Full Reset (or only ISP Data / VoIP Data) → the reset button
• Login after reset: admin / admin; V2 revisions: the password on the bottom label
• Note: With Lock keypad update on or a provider lock the reset fails — RESET only restarts the unit

Steps with screens on the brand page →

Fanvil X / V / H (desk and hotel phones)#

• On the device (password known): Menu → System (PIN 123) → Restore factory Settings → choose what to erase → OK
• If the password is lost: On the idle screen hold OK for 6 s
• From the web interface: System → Configurations → Reset Phone (H3W/H5W: System → Configuration → Reset Phone)
• Login after reset: admin / admin; menu PIN 123
• Note: With a selective wipe (Clear Configurations) on a second-hand phone, clear AUTOPROVISION first

Steps with screens on the brand page →

Fanvil X3S / X3SP — step by step for beginners#

• On the device (password known): Menu → Settings → Advanced Settings (PIN 123) → Reset to Default → Yes (X3SG, X3S Pro: Restore factory Settings)
• If the password is lost: X3SG, X3S Pro: in standby hold OK for 6 s
• From the web interface: System → Configurations: Reset Phone (X3SG, X3S Pro) or Clear Configurations per module
• Login after reset: admin / admin (also on the sticker underneath); PIN 123
• Note: Phone from a previous carrier: clear AUTOPROVISION or do a full reset

Steps with screens on the brand page →

Panasonic KX-HDV / KX-TGP / KX-UT#

• On the device (password known): KX-UT: Setup → #136 → Factory Settings → Yes → Yes
• If the password is lost: KX-UT: Setup → #739 resets only the web ID and password, settings stay
• From the web interface: Maintenance → Reset to Defaults → [Reset to Carrier Defaults] → OK (all models, incl. the KX-TGP600 base)
• Login after reset: admin / adminpass
• Note: After a reset the web interface is off again — enable it from the device (step 2)

Steps with screens on the brand page →

Cisco SPA / MPP 6800–8800 / ATA 19x#

• On the device (password known): MPP: Applications → Device administration → Factory reset → OK (on some firmware: Admin Settings → Factory Reset)
• If the password is lost: MPP: remove power, hold # while plugging in, then # and 123456789*0#; ATA 191/192: RESET for 10 s
• From the web interface: MPP: http://<IP>/admin/factory-reset → Confirm Factory Reset; ATA 191/192: Administration → Factory Defaults
• Login after reset: admin with no password; ATA 191/192 require setting passwords on first login
• Note: Do not cut power until the main screen appears; screenless SPA301/SPA501G: IVR code 73738

Steps with screens on the brand page →

Snom D-series and M-series DECT#

• On the device (password known): Settings → 5 Maintenance → 4 Reset Values → admin password 0000 (the item exists only in administrator mode)
• If the password is lost: Desk phones: the vendor TFTP Update procedure (Snom wiki); M-series DECT base: Reset key on the back ≥ 10 s
• From the web interface: Desk phones: Advanced → Update → the reset button; DECT base: Management → the reset button at the bottom
• Login after reset: Desk phones: no HTTP password, admin password 0000; DECT base: admin / admin
• Note: A DECT handset is reset separately from the base, with its own PIN

Steps with screens on the brand page →

Poly (Polycom) VVX / Edge E / Trio / OBi#

• On the device (password known): Settings → Advanced (password 456) → Administration Settings → Reset to Defaults → Reset to Factory
• If the password is lost: —
• From the web interface: The same reset options on the Web Configuration Utility settings page
• Login after reset: Admin password 456 (user: 123)
• Note: Reset to Factory Partial keeps the admin password; a second-hand phone needs Reset to Factory

Steps with screens on the brand page →

Gigaset N670 / N870 IP PRO and DECT handsets#

• On the device (password known): —
• If the password is lost: Button on the base: hold ≥ 10 s until LEDs go off → short presses until both are blue → hold 3–10 s
• From the web interface: Settings → System → Reboot and reset → Reset to factory settings → role All in one + internal telephony - dynamic IP
• Login after reset: admin / admin, a new password is required on first login
• Note: A base reset does not clear the handsets: de-register each handset and register it again

Steps with screens on the brand page →

D-Link DPH-150S / DPH-400S#

• On the device (password known): DPH-150S: Menu → Advanced settings (123) → Factory Reset → Yes; DPH-400S: Config → 18.Admin (1234) → 8.Reset
• If the password is lost: DPH-400S/400SE: the Reset button on the case
• From the web interface: DPH-120S/150S: System → Configurations → Reset to factory defaults
• Login after reset: DPH-120S/150S: admin / admin; DPH-400S: admin / 1234
• Note: After a reset the DPH-400S is back on static 192.168.1.10: the computer needs an address in that subnet

Steps with screens on the brand page →

Htek UC9xx / UC8xx#

• On the device (password known): Menu → Settings → Advanced Setting (password admin) → Phone Setting → Factory Reset → OK
• If the password is lost: —
• From the web interface: Management → Upgrade → Reset To Factory → confirm
• Login after reset: admin / admin
• Note: If the phone requires a password for a reset (a separate config option), reset from the web interface

Steps with screens on the brand page →

Escene ES / WS#

• On the device (password known): Menu → System settings → Advanced settings (empty password) → Restore factory values
• If the password is lost: —
• From the web interface: Maintenance section → Restore factory configuration, then reboot the phone
• Login after reset: root / root
• Note: After a web reset the phone must be rebooted to take effect; without DHCP it comes up on 192.168.0.200

Steps with screens on the brand page →

Flyingvoice FIP1x, P series and FTA (ATA)#

• On the device (password known): Menu → Advanced (password admin) → Reset to Factory Settings → Reset → OK
• If the password is lost: FTA/G50x adapters: the Reset button on the case for 10 s
• From the web interface: Administration → Management → Factory Default → the Factory Default button
• Login after reset: admin / admin
• Note: An enabled Factory Default Lock blocks the reset — turn it off first

Steps with screens on the brand page →

Eltex VP-12/15/17/20/30 and TAU (ATA)#

• On the device (password known): Меню → 3. Настройки → 2. Система → 5. Сброс настроек → Да (Menu → Settings → System → Reset settings → Yes; VP-30P asks for the admin password)
• If the password is lost: TAU gateway: hold the F button until the Power LED blinks red and green alternately
• From the web interface: Система → Управление конфигурацией (System → Configuration management) → Сброс (Reset)
• Login after reset: admin / password
• Note: Eltex recommends a factory reset on first power-up, before configuring

Steps with screens on the brand page →

QTECH QVP and QIPP#

• On the device (password known): —
• If the password is lost: —
• From the web interface: Maintenance → Basic → Factory settings → Возврат к заводским настройкам (Restore factory settings)
• Login after reset: admin / admin
• Note: No on-device reset is documented: if both passwords are lost, contact QTECH support

Steps with screens on the brand page →

Yeastar TA and Dinstar DAG gateways (ATA)#

• On the device (password known): TA: handset → *** → 3 → 123456# → 8; DAG: handset → *166*000000#
• If the password is lost: The handset codes do not ask for the web password; a DAG also has a Reset button on the case
• From the web interface: TA: System → System Preferences → Reset and Reboot → Reset to Factory Defaults; DAG: Tools → Factory Reset → Apply
• Login after reset: TA: admin / password; DAG: admin / admin
• Note: Yeastar TA: do not cut the power until the RUN light starts blinking

Steps with screens on the brand page →

Alcatel-Lucent 80x8s CE, Myriad and Halo#

• On the device (password known): Right navigator key → Admin (Myriad/Halo: Advance Setting) → 123456 → last page → Restore factory → OK
• If the password is lost: Myriad: hold Conference for more than 10 s → confirm with the soft key
• From the web interface: Maintenance → Restore factory → the Restore factory button
• Login after reset: admin / 123456
• Note: Settings that come back on their own mean a foreign Provision URL is inside: do a full reset

Steps with screens on the brand page →

Avaya J100 (Open SIP)#

• On the device (password known): Main Menu → Administration (code 27238) → Reset to defaults → Reset
• If the password is lost: Mute, then the MAC as digits (a–c = 2, d–f = 3) and # — Open SIP mode only
• From the web interface: Reset to Default in the left menu → OK
• Login after reset: admin / 27238, a new password is required on first login
• Note: A web reset goes through only if the phone is not on a call

Steps with screens on the brand page →

AudioCodes 400HD / C450HD#

• On the device (password known): MENU → Administration (password 1234) → Restore Defaults → Select → Yes
• If the password is lost: Holding OK + MENU, unplug power, plug it back and keep holding ~5 s (PoE: pull the network cable)
• From the web interface: —
• Login after reset: admin / 1234 (the 425HD ships with the web interface disabled)

Steps with screens on the brand page →

Mitel 6800 / 6900 (SIP)#

• On the device (password known): Options → Advanced (password 22222) → Reset → Factory Default → Yes (6863i/6865i: Administrator Menu → Factory Default → #)
• If the password is lost: —
• From the web interface: Operation → Reset → Current Settings → Restore To Factory Defaults → Restore
• Login after reset: admin / 22222
• Note: Remove Local Configuration Settings (Erase Local Cfg.) is the gentler option: provisioning-file settings stay

Steps with screens on the brand page →

Unify OpenScape CP / OpenStage (SIP)#

• On the device (password known): Admin → Maintenance → Factory reset → reset password 124816
• If the password is lost: Settings → press 2 – 8 – 9 simultaneously → reset password 124816 → OK
• From the web interface: Maintenance → Factory reset → reset password 124816 → Submit
• Login after reset: Admin password 123456 (user password not set)
• Note: The reset password 124816 is separate from the admin password; 2-8-9 can be disabled (Factory reset claw)

Steps with screens on the brand page →

Fanvil i-series, Akuvox and 2N door phones#

• On the device (password known): —
• If the password is lost: 2N: a jumper or the Reset button inside the housing (see the model's installation manual)
• From the web interface: Fanvil: System → Configuration → Reset Phone; Akuvox: System → Upgrade; 2N: System → Maintenance → Reset Configuration
• Login after reset: Fanvil, Akuvox: admin / admin; 2N: admin / 2n, changed on first login
• Note: On 2N any reset deletes a purchased licence key — save it beforehand

Steps with screens on the brand page →

Karel IP1xx (Turkey)#

• On the device (password known): Menü → Ayarlar → Gelişmiş (password admin) → Fabrika ayarları → TAMAM → TAMAM
• If the password is lost: —
• From the web interface: Güncelleme → Basit → Fabrika ayarlarını yükle → Uygulama
• Login after reset: admin / admin
• Note: Do not cut the power during the reset — it damages the phone's memory

Steps with screens on the brand page →

Sangoma P-Series and D-Series#

• On the device (password known): P-Series: Main Menu → Factory Reset; D-Series: More → More → Menu → 5 (Advanced) → 2 → Yes
• If the password is lost: D-Series: after boot step 2 of 8 hold * + 8 + 6; D80: while booting hold three screen corners for 7 s
• From the web interface: —
• Login after reset: admin / 789
• Note: The reset unlocks the web interface closed by provisioning; it cannot run during a call

Steps with screens on the brand page →

No row for your phone — it does not have a page yet. Look for the reset procedure in the manufacturer's user guide under “Factory Reset”; the factory password is on the sticker on the bottom or in the same guide.

After the reset#

1. Language and time zone — on the device or in the web interface (the time is needed for a correct call history).
2. Network — if there was a static IP or VLAN, set them again.
3. Change the factory password of the web interface.
4. Account — step 3 of your brand's guide again, with the credentials from the “Extension credentials” window. If the extension password was not saved, press “Reset password” for the operator — see “Credentials”.
5. Check — the green dot for the operator in the admin panel and the *43 echo test: a beep and your own voice mean the audio is fine.

If the phone will not reset#

• The long press does nothing. An administrator may have disabled keypad reset (Yealink has a separate parameter for it) — use the password path or the web interface.
• The password is unknown and the model has no way without it. Contact the seller or the provider who issued the device: on some models a reset without the password is only possible through the manufacturer's service procedure.
• The settings “come back” after the reset. That is the provider's auto-provisioning — see item 2 of “What to check before the reset”.

FAQ#

Does a reset remove the firmware?#

No. A reset returns the factory settings; the firmware stays as it was. A reset cannot roll the firmware back.

Do I need to do anything in the admin panel after resetting the phone?#

No, the extension in the admin panel does not change. The phone just has to be set up again with the same login and password. If the password was not written down, issue a new one with “Reset password” for the operator — the old one stops working on all devices of that extension.

What is the difference between a “reboot” and a “reset”?#

A reboot turns the phone off and on without erasing anything — it cures freezes. A reset erases all settings. If the phone has simply stopped registering, start with a reboot and the *43 echo test, and move on to a reset when the settings are clearly broken.

Can I reset only the account without touching the network?#

Yes: open the account page in the web interface and re-enter the fields. A full reset is not needed for that. Some brands also have a partial reset (for example, Yealink's “Reset Local Settings”) — it only clears manual changes and is not a full reset.

Related sections#

• Overview: connecting a phone to the PBX — credentials, network, the *43 echo test
• Phone not working: troubleshooting by symptom
• Not registering: messages and error codes
• Network, router and internet

Sources#

• The “Factory reset” sections of the family pages landing/src/docs/sip-phone-*.md — each is written from the manufacturer's guides, listed under “Sources” on the brand page
• Summary for the table — docs/phone-knowledge/reset-summary.json