Tenor products comply with international SIP and H.323 VoIP signaling protocol standards. They have been deployed throughout the world with IP PBX and IP softswitch systems from major vendors including Avaya, BroadSoft, Cisco, Fujitsu, Inter-Tel, Nortel, Seimens, and Toshiba. Please see the IP PBX Compatibility table for more specific information.

Manufacturer	Model	Product	Minimum PBX Software Version	Protocol	Gateway
Asterisk		IP PBX	Release 1.4.15	SIP	All
Avaya	S8300/SES	IP PBX	SES 3.1 (Build 18)	SIP	All
Avaya	Quick Edition	IP PBX	Release 3.1	SIP	DX Series
BroadSoft	Broadworks	SoftSwitch	Release13 (Access Device)	SIP	All
BroadSoft	Broadworks	SoftSwitch	Release13 (Network Device)	SIP	All
Cisco	Call Manager	IP PBX	Release 5.0	SIP	All
Dialexia	Dial-Office	IP PBX	Version 3.8	SIP	All
Dialexia	Dial-Centrex	IP Centrex	Version 3.8	SIP	All
Dialexia	Dial-Gate	SoftSwitch	Version 3.8	SIP	All
Fujitsu	IP Call Partner	IP PBX	Application Version Release 2.2.8	SIP	All
Inter-Tel	7000	IP PBX	Release v.1.1.1.0-6	SIP	All
Microsoft	OCS 2007	IP PBX	(Via Microsoft Mediation Server)	SIP	All
Nortel	BCM	IP PBX	Release 3.5	H.323	AS/AF/AX
Nortel	CS-1000	IP PBX	Release 4.0	H.323	All
Nortel	CS-1000	P PBX	Release 4.50W	SIP	All
ObjectWorld	IP UC Server	IP UC Server	Release 4.2.0.6031	SIP	DX
Sphere	Sphericall	IP PBX	Release 6.2	SIP	All
Sylantro	Synergy	SoftSwitch	Release 3.2.1	SIP	All
Vertical	Televantage	IP PBX	Release 7.5.4898	SIP	All
3Com	VCX	IP PBX	Release 7.0	SIP	All