Htek UC9xx / UC8xx — setup for our PBX

Htek (a brand of Nanjing Hanlong Technology) makes inexpensive desk IP phones that turn up a lot in cafés, hotels and warehouses: from the single-line UC902 to the UC926 with a colour screen and a gigabit port. Every phone in the UC9 range shares one web interface, so this page fits any of them.

One Htek quirk: the setup is split across two screens — Profile (what the PBX is: server address, transport — filled in once) and Account (who is on that PBX: login, password, number). Fill in only one of them and the phone will not register.

Common credentials, ports and network requirements are on the overview page “SIP phone setup”.

What you need#

• Extension credentials from the admin panel: Admin panel → Telephony → Operators tab → “Reset password” on the operator (how to get them).
• The phone connected by cable to the same network as your computer. Most models take PoE (802.3af); builds without a P in the name need a power adapter.
• A computer with a browser on the same network.

Step 1. Find the phone's IP address#

The quickest way: press the OK key while the phone is idle — the current IP address, MAC address and firmware version appear on the display.

For more detail, use the menu: Menu → Status → Network → IPV4. It also shows whether the address came from DHCP (WAN Type: DHCP mode) or was set by hand.

Screenshot: Htek UC9 Series IP Phone User Guide, p. 35.

Menu → Status → Accounts shows whether the line is registered — you will need it in step 4.

Step 2. Log in to the web interface#

Type the phone's address into your browser: http://<phone IP>.

On the first login the phone warns that the factory password is in use — both on its own display and in the browser. Change the administrator password and write the new one down: it cannot be recovered, only reset together with the phone.

The computer and the phone must be on the same subnet, otherwise the page simply will not open.

Step 3. Enter the PBX credentials#

3.1. The PBX profile (once)#

Open Profile → Basic, pick Profile 1 in the Profile list and fill in:

Leave DHCP SIP Server set to No. Click the save button at the bottom of the page.

3.2. The staff account#

Open Account → Basic, pick a free row (Account 1) in the Account list and fill in:

Fields marked with * are mandatory. Click SaveSet.

Screenshot: Htek UC9 Series IP Phone User Guide, p. 39.

Step 4. Verify the registration#

• In the web interface: the Account Status field on Account → Basic states outright whether the line is registered. The start page gives the overall summary (Version, Account Status, Network).
• On the phone: Menu → Status → Accounts; on the home screen a registered line switches its icon to “Line (Registered)”.
• In the admin panel: Telephony → Operators — a green dot lights up next to the operator, together with the string the phone used to identify itself. The status comes from the PBX and refreshes at most once a minute.
• A test call: dial a colleague's extension.

Factory reset#

A reset is needed if the phone was bought second-hand (it still holds someone else's account and, worse, someone else's provisioning address, which will overwrite your settings on every reboot), if the administrator password has been forgotten, or if the phone behaves unpredictably. Everything is erased: SIP accounts and profiles, network settings, passwords, the phone book, the call history, the language.

Method 1. From the phone. Menu → Settings → Advanced Setting (factory password admin) → Phone Setting → Factory Reset, then the OK soft key on the warning screen.

Method 2. From the web interface. Management → Upgrade → the Reset To Factory button → confirm.

Screenshot: Htek UC9 Series IP Phone User Guide, p. 162.

After the reset. The phone reboots and takes an address over DHCP again — find it with the OK key (step 1). The administrator password is admin once more, and the phone will warn about the factory password again. The profile and the account have to be entered from scratch.

If a reset from the phone will not go through, the configuration may carry the option that requires a password for a factory reset (a separate Htek setting available through the configuration file). In that case reset from the web interface, where you know the administrator password.

If the phone does not register#

1. Only the Account or only the Profile is filled in. This is the most common Htek mistake: the PBX address lives in Profile → Basic while the login and password live in Account → Basic, and the account must point at the right Profile.
2. Account Active is not set to Yes. The line is configured but switched off.
3. The extension number was typed into the login field. SIP User ID and Authenticate ID must hold the whole sip-xxxxxxxx-<extension> string, not “101”.
4. The password came from the wrong window. An extension password is shown once; if it was not saved, click “Reset password” in the admin panel and enter the new one.
5. A port was appended to the server field incorrectly. Our PBX uses the standard 5060, so there is no need to append a port at all.
6. TLS is selected as the transport. Our PBX does not offer TLS/SRTP encryption: SIP Transport must be UDP.
7. SIP ALG on the router. Registration works but the call drops or only one side is audible — switch SIP ALG off (details in the overview).

Models in this family#

Frequently asked questions#

How does a Profile differ from an Account, and why are there two?#

A Profile describes the PBX: server address, transport, registration timers. An Account describes a person: login, password, number. One profile serves every account on the phone, so when the PBX address changes there is a single place to fix. If your venue has one PBX, Profile 1 is all you need.

Can several extensions be registered on one phone?#

Yes: the UC912 has four lines, the UC921/923/924/926 have six. Create Account 2, Account 3 and so on, pointing each at the same Profile 1 but with its own login and password. The lines are spread across the keys on the case.

The phone says the factory password is in use. Is that an error?#

No, it is Htek's standard warning: as long as the administrator password is still admin, it stays on both the phone's display and the web interface. Change the password in the settings and it disappears. It affects neither registration nor calls.

Does auto-provisioning work with your PBX?#

No, the platform has no provisioning server — the phone is configured by hand as described above. Htek itself does have a provisioning mechanism and operators use it: if a second-hand phone still holds someone else's provisioning address, your settings will be overwritten on every reboot. Start with a factory reset.

Does anything need changing in the codecs?#

No. Htek's factory set already starts with G.711 (PCMU/PCMA) and includes G.722 — exactly what our PBX uses.

Sources#

• Htek IP Phones Administrator Guide, version 2.42.6.5 — https://www.htek.com/wp-content/uploads/2025/10/Htek-UC9-Series-IP-Phone-Administrator-Guide.pdf (the model list — p. 14, showing the IP with the OK key and the factory admin/admin — p. 17, the 1234 user password — p. 51, the codec table and its factory priority — p. 132)
• Htek UC9 Series IP Phone User Guide — https://www.htek.com/wp-content/uploads/2025/10/Htek-UC9-Series-IP-Phone-User-Guide.pdf (the Menu → Status screens — pp. 34–36, registration via Profile → Basic and Account → Basic — pp. 37–40, the factory reset — p. 162)
• Htek support section — https://www.htek.com/all-support-phone/ (manuals and firmware by model, including the discontinued-products section)