Cisco 509G - Manual (Page 26)

Installing Your Phone
Connecting the Power
Cisco Small Business Pro IP Phone SPA50X User Guide (SIP) 19
2
STEP 3 Rotate the tab 180° and re-insert into the phone base. The tab now catches the
slot in the handset when the handset is placed onto the cradle.
Connecting the Power
If you are using an external power source, insert one end of the power cord into an
outlet and insert the other end of the power cord into the power port on the phone
body.