In order Off-hook extension dialing on the Polycom IP 6000 to work, you will need to set the Polycom dial plan digit mapping in the phone's administration web page.

3 Digits Ext.

[2-9]11|0T|011xxx.T|9[0-1][2-9]xxxxxxxxx|[1-8]xx

3|3|3|3|3 

4 Digits Ext.

[2-9]11|0T|011xxx.T|9[0-1][2-9]xxxxxxxxx|[1-8]xxx

3|3|3|3|3 


This dial plan setting is for the Allworx default dial plan which uses 9 to grab an outside line. You can also delete the digit map, but you will be forced to press the send key after dialing.

If your setting are different refer to these KB articles:
http://community.polycom.com/t5/VoIP/SoundStation-...

http://community.polycom.com/t5/VoIP/FAQ-Unable-to...



Polycom, IP, 6000, Off Hook, dialing, phone, dial, plan