Not all XMPP clients support calling, and some work intermittently depending on which version you're using.  In addition, clients like [[https://mov.im/|Movim]] may behave differently depending on your web browser configuration.  This aims to be an incomplete list of calling compatibility across popular clients.  "DTMF" refers to [[https://en.wikipedia.org/wiki/DTMF|dual-tone multi-frequency signaling]] or what is commonly referred to as a dialpad to allow for number input during phone calls.

== Movim browser compatibility matrix ==

The other person's Jabber ID needs to be in your roster and they need to share presence with you in order for Movim to present the audio/video call icons.

|= Browser |= Movim instance |= Audio/Video |= DTMF |= Date tested |= Notes |
| Brave 1.64.116 (Flathub on Fedora) | mov.im | Yes/Yes | Yes | 2024-04-07 | Outgoing audio and video calls work; incoming calls ring but display a blank popup window after selecting "Reply" |
| Firefox 124 (Flathub on Fedora) | mov.im | Yes/Yes | Yes | 2024-03-24 | Strict tracking protection, but otherwise default |

== Other client compatibility ==

|= Client |= Audio/Video |= DTMF |= Date tested |= Notes |
| Dino 0.4.3 (Flathub on Fedora) | Yes/Yes | No | 2024-03-24 | Occasionally choppy audio when calling through JMP, but Jabber-to-Jabber is fine |
| Gajim 1.8.4 (Flathub on Fedora) | No/No | Yes | 2024-03-24 | |