Yealink
Register a Yealink T3x, T4x or T5x series IP phone as a desk handset or on a desk phone line.
Click Show setup link on the phone's row in Settings → Phone → Voice & calling → Calling devices (a desk handset — a person's or a shared one like the reception phone), or on the number's card in Settings → Call routing (a desk phone line). See Desk phones for the difference.
Set up by link
On the phone, open Menu → Settings → Advanced Settings → Auto
Provision (factory admin password admin) — or, on its web page,
Settings → Auto Provision.
Type the setup link into URL (or Server URL), including
https://. Leave Username, Password, Common AES and
MAC-Oriented AES blank.
Save, then choose Autoprovision Now. The phone downloads its settings and registers; click Refresh on the card to see Handset registered.
If the phone refuses the link's security certificate, update its firmware — never switch certificate checking off, because the download carries the line's password.
The phone's own keys
On a desk handset set up by link, the phone's own keys work with Smileline:
- Transfer asks the colleague first: press it, type their extension, then
#. The caller hears hold music while the colleague's devices ring. Press#to hand the caller over, or*to take them back. - Send now, a soft key during a call, asks for the extension on screen and transfers straight away. If the colleague doesn't answer, your phone rings again, then the caller can leave a voicemail.
- Voicemail, a soft key during a call, sends the caller to voicemail.
- Hold puts the caller on the practice's hold music; Resume brings them back straight away. A hold started with the app's Hold is ended with the app's Resume, not the phone's.
A handset whose settings were entered by hand keeps the phone's own Transfer, which Smileline can't follow: use the keypad codes in Settings → Voice or the app's call bar instead, or set the phone up by link. A desk phone line is never transferred by Smileline.
Enter the settings by hand
Connect the phone to your network and power. When it boots, press OK (or Menu → Status) to read its IP address off the screen.
In a browser on the same network, open https://<phone-ip> and sign in.
The factory login is admin / admin — change it while you're there.
Go to Account → Register and fill in, for Account 1:
- Line Active: Enabled
- Label and Display Name: your practice name
- Register Name and User Name: the line's username
- Password: the line's password
- Server Host: the server shown under Show setup link —
sip.telnyx.eufor a UK practice,sip.telnyx.comfor a US one — port5061 - Transport: TLS
- Server Expires:
180
Under Account → Advanced, set:
- RTP Encryption (SRTP): Compulsory on a desk handset, Disabled on a desk phone line or a handset added before Smileline turned encryption on (see Desk phones)
- Keep Alive Type: Options, every
30seconds - DTMF Type: RFC2833
Under Account → Codec, enable G722 first, then PCMA and PCMU in the UK (PCMU before PCMA in the US), and disable G729.
Click Confirm. The account status shows Registered within a few seconds, and the line icon on the handset turns solid.
Call the number from a mobile — the handset rings. If the line is two-way, dial out to confirm outbound.
More than one Yealink can register with the same credentials; they ring together. Repeat these steps on each handset.
If registration fails, check the password was copied exactly (reveal it again if unsure), and run through the network checklist. Yealink's own manuals live at support.yealink.com, and the carrier's guide is Yealink: Setup with Telnyx.