D-Link DSL-G624T rev A1

Wireless G ADSL2+ Modem Router Product page (D-Link UK)

On the OpenWrt wiki
 * TNETD7300AZDW CPU

On the routertech.org forums
 * 00:19:5B OUI

The wireless module is probably a Alpha Networks WMP-G04.

Per the manual, the default SSID is presumed to be DLINK_WIRELESS.
 * There are a fair number of entries for this SSID on WiGLE.