gist/callforwarding/README.md

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<!-- START doctoc generated TOC please keep comment here to allow auto update -->
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- [Call forwarding, relevant commands edition](#call-forwarding-relevant-commands-edition)
- [Commands](#commands)
- [Status check](#status-check)
- [GUI](#gui)
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# Call forwarding, relevant commands edition
_This is widely documented around the internet, but everything has a lot
of details irrelevant to my case of two phones and it's always effort to
cherry-pick the relevant parts. This file may be unintentionally Finland
specific._
1. Open dialer
2. Enter command. +358 is Finnish international format, remove leading 0 from
phone number's local format. (040… → +35840…)
3. Call there
## Commands
- `##002#` - Remove all call forwards
- `**61*+358…**30#` - forward if call is not answered in 30 seconds
- 30 may be replaced with multiples of 5 between 5 and 30.
- `**62*+358…#` - forward if phone is not connected to network.
- `**67*+358…#` - forward if phone is on another call.
Copy-paste template for text editor:
```
**61*+358…**30#
**62*+358…#
**67*+358…#
```
## Status check
- `*#002#` - Supposedly status for all forwards. Will respond with everything
has failed.
- `*#61#` - Status for forward while not answered. Doesn't show the amount
of seconds as that would likely make life too easy?
- `*#62#` - Status for forward when not connected to network.
- `*#67#` - Status for when being in other calls.
## GUI
- Apple: has no proper GUI for the cases above, only on/off toggle for
forwarding every call.
https://support.apple.com/guide/iphone/iphe9bdd027a/ios
- Android: Dialer → Settings → Calling Accounts → SIM → Call forwarding.
Has options for Always, Busy, Not answered (no word on time) and Out of
network.
- SailfishOS: Settings → Applications → Phone → Call forwarding. Case forward when
not answered in X time has no option how long to wait and I am not going to try
whether it forwards in 5 or 30 seconds.