Sagemcom SE567 (Frontier)

CPU part number is TNETD7200ZDW (before Infineon branding) or PSB7200ZDW (after Infineon branding). While the pictured device has Infineon branded silicon, the device is set to TI branded part numbers.

Siemens Gigaset SE567 on the OpenWrt wiki

The default SSID appears to be frontier followed by the last four hex digits (upper case letters) of the LAN interface MAC address.

The power adapter is a DVE DV-1280-3 (12VDC, 1A).