Firmware
- Backup indicates Mersey6 6.4.6.2453 (Oct 24, 2023).
Provisioning
- Current provisioning: GoTo/OnJive.
- Overlay provisioning is acceptable for now.
- SIP credentials are available per line.
Control Paths
- Primary: control extensions via call-events webhook.
- Alternate: XML services menu or Action URI softkeys.
- DTMF is allowed if a viable capture path exists.