Shark PBX is often compatible with SIP-based softphones (like Zoiper, Linphone, or a branded mobile app). This is not a web login but a login via SIP credentials.
To investigate a PBX login issue using "Shark" tools, follow these steps: 1. Capture the Login Traffic shark pbx login
If you are attempting to log into a physical PBX or network-enabled device like an Electro Industries Shark Meter Shark 100BT 200 Meters Shark PBX is often compatible with SIP-based softphones