Cisco SPA IP Phone Star Commands

Question

Which star code commands are supported on Cisco phones with 8x8 service?

* Code	Description	8x8 Supported?
38	Park a call.	Yes
56	Enables call waiting.	Yes
57	Deactivates call waiting.	Yes
66	Activates Call Back. Causes the IP phone to redial a busy number until the called party's phone rings.	Yes
67	Activates caller ID blocking. Can cause Internal Server Error.	No Creates Error
68	Deactivates caller ID blocking. Fixes outbound call Internal Server Error.	Yes Error Fix
69	Call the most recent number that called your phone. Can cause Internal Server Error.	No Creates Error
71	If call waiting is deactivated, enables call waiting for a single call.	Yes
77	Activate anonymous call blocking.	Yes
78	Activate DND.	Yes
79	Deactivates DND. Use if DND is stuck.	Yes
86	Deactivate Call Back.	Yes
87	Deactivate anonymous call blocking.	Yes
98	Blind Transfer.	Yes

Note that dialing an unsupported code may result in an Internal Server Error.