Polycom IP 4000 Conference Phone SIP Expandable 2200-06640-001 Expandable Microphones:Add One Expandable Mic This integrated access device (IAD)

This integrated access device (IAD) takes T1 signals and converts them over to PRI signals

newer controller card for the MX2800

Compatibility: Bizfon 680

and can terminate DS1 bandwidth into individual DS0 64Kbit voice channels

Polycom IP 4000 Conference Phone SIP Expandable 2200-06640-001 Expandable Microphones:Add One Expandable Mic This integrated access device (IAD)Polycom IP 4000 Conference Phone Description: The Polycom IP 4000 conference phone is a SIP protocol based conference phone designed to run voice over IP (VoIP). The Polycom IP 4000 features improved speakers and microphones over the previous IP 3000 conference phone. Built around the SIP protocol, the IP 4000 (MPN: 2200 06640 001) is compatible with many different phone systems and even hosted phone solutions. Managing the IP 4000 is a breeze with