Call forwarding – also known as call diversion – is the fastest, most reliable way to achieve 24/7 telephone availability in Switzerland without changing your existing phone number or buying new hardware. In this complete 2026 guide, you will find all activation and deactivation codes for Swisscom, Sunrise and Salt (landline and mobile), instructions for iPhone, Android and business PBX systems, and how to connect your line to a Swiss AI phone assistant.
The Three Types of Call Forwarding Explained
Before entering a keypad code, choose which forwarding mode matches your daily workflow:
- Immediate / Unconditional Forwarding (Code 21): Every incoming call is routed immediately to the destination number without your telephone ringing. Ideal for evenings, weekends, company holidays or when an AI phone assistant serves as your first-line reception.
- Forwarding on No Answer / Delayed Forwarding (Code 61): Your telephone rings first; if nobody picks up within a set number of seconds (typically 15–20 seconds), the call forwards automatically.
- Forwarding When Busy (Code 67): Calls are forwarded only when you are already speaking on the line (on mobile networks, Code 62 also covers when your phone is switched off or out of network coverage).
Call Forwarding with Swisscom (Landline & Mobile)
On Swisscom fixed-network (IP telephony) and Swisscom Mobile (Prepaid & NATEL/inOne subscriptions), use the following keypad codes:
| Forwarding Type | Activate (Swisscom) | Deactivate | Check Status |
|---|---|---|---|
| Immediate forwarding (all calls) | *21*TargetNumber# |
#21# |
*#21# |
| On no answer (after ~15–20 sec) | *61*TargetNumber# |
#61# |
*#61# |
| When line is busy | *67*TargetNumber# |
#67# |
*#67# |
| When unreachable / switched off (Mobile) | *62*TargetNumber# |
#62# |
*#62# |
Alternatively, you can manage all call diversions at any time in the My Swisscom App (Settings → Call forwarding) or online in the Swisscom Customer Centre (swisscom.ch/kundencenter).
Call Forwarding with Sunrise (Mobile & Landline)
Sunrise uses double-asterisk GSM standard codes for activation and double-hash codes for deactivation:
| Forwarding Type | Activate (Sunrise) | Deactivate | Check Status |
|---|---|---|---|
| Immediate forwarding (all calls) | **21*TargetNumber# |
##21# |
*#21# |
| On no answer | **61*TargetNumber# |
##61# |
*#61# |
| When line is busy | **67*TargetNumber# |
##67# |
*#67# |
| Cancel all conditional forwardings | — | ##002# |
— |
You can also configure rules via the My Sunrise App or at sunrise.ch/mysunrise.
Call Forwarding with Salt (Salt Mobile & Salt Business)
| Forwarding Type | Activate (Salt) | Deactivate | Check Status |
|---|---|---|---|
| Immediate forwarding (all calls) | **21*TargetNumber# |
##21# |
*#21# |
| On no answer | **61*TargetNumber# |
##61# |
*#61# |
| When line is busy | **67*TargetNumber# |
##67# |
*#67# |
Setting Up Call Forwarding on iPhone (iOS), Android & Business PBX
iPhone (iOS)
- Open Settings on your iPhone and tap Phone (or Apps → Phone on iOS 18+).
- Select Call Forwarding, toggle the switch on and enter your Swiss destination number under Forward To.
Android Smartphones
- Open the Phone app, tap the three-dot menu in the top corner and open Settings.
- Tap Calling accounts (or Supplementary services on Samsung devices) → Call forwarding, then choose Always forward, When busy, When unanswered or When unreachable.
Connecting Call Forwarding to a Swiss AI Phone Assistant
Instead of routing unanswered calls to a passive voicemail box (Combox) where over 70% of callers hang up without leaving a message, Swiss SMEs, medical practices, dental clinics and garages forward their calls to a Suisse Line AI Phone Assistant:
Practical Example & Transparent Pricing
Suppose your main business number is 044 123 45 67. In your Suisse Line portal, you receive a dedicated Swiss number such as 044 987 65 43. By dialling *61*0449876543# and *67*0449876543# (or connecting your PBX via a Dedicated SIP Trunk), every call you cannot answer personally is picked up immediately by your AI assistant – in English, German, Swiss dialects, French or Italian.
Suisse Line packages: Starter at CHF 1,980/year (including 1,200 talk minutes/year and +5,000 integrations), Pro at CHF 4,980/year (including 3,600 talk minutes/year), additional minutes at CHF 0.39/min billed per second, Enterprise on request. 100% hosted in Zurich and ISO/IEC 27001:2022 certified since 28 September 2026 (Swiss Safety Center, Certificate No. 26-511-723). Full details on our Pricing page.
Related guides: Medical Practice AI Guide · Dental Practice AI Guide · Law Firm AI Guide · Garage AI Guide · Pricing