Sysevo

T-Mobile NL call forwarding codes

How to forward calls on T-Mobile NL in Netherlands: the codes to dial from your phone, how to set it up in Mijn Odido app (formerly T-Mobile), and how to switch it off again.

ForwardTurn onTurn off

All calls

**21*[number]###21#

When you don’t answer

**61*[number]###61#

When you’re busy

**67*[number]###67#

Replace [number] with the full number you want calls sent to, with its country code, for example +44 7700 900123. Dial the code like a phone number and press call. A confirmation message or tone means it worked.

Step by step

  1. Open the Mijn Odido app or sign in at mijn.odido.nl (T-Mobile NL is now Odido)
  2. Go to 'Mijn abonnement' → 'Instellingen' and select 'Doorschakelen'
  3. Or open your phone's dialler and enter **21*[number]# then press call
  4. Confirm the forward; to cancel later dial ##21#

Ask T-Mobile NL to do it

Call Odido (T-Mobile NL) free on 1200 and ask to forward all calls to the number you want.

Forward missed calls to an AI receptionist

The same codes work with Sysevo. Get a number for an AI voice agent, then use the “when you don’t answer” code so the agent picks up the calls you miss: it answers, books, takes the details and logs everything in your CRM. Your customers keep dialling the number they already know, and nothing is ported or switched off. See phone numbers and AI voice agents.

Questions

How do I forward all calls on T-Mobile NL?

Dial **21*[number]# and press call, where [number] is the full number you want calls sent to, with its country code, for example +44 7700 900123. To turn it off, dial ##21#.

How do I forward calls on T-Mobile NL only when I don't answer?

Dial **61*[number]#. Calls ring your phone first and move on only if nobody picks up. Dial ##61# to stop.

Can T-Mobile NL set up call forwarding for me?

Call Odido (T-Mobile NL) free on 1200 and ask to forward all calls to the number you want.

Other networks in Netherlands

Codes can change and some plans block forwarding. If a code doesn’t work, ask T-Mobile NL support. All networks.

Stop losing the calls you miss.Send them to an AI agent with one forwarding code.

A short demo on your own number. We'll show you the code for your network while you're on the call.

Book a demo
No card, no porting, nothing switched off·Compare plans