Samsung Enterprise SMT-i5230D IP Phone SIP 5 Button Handsets The Cisco MDS 9124 is

The Cisco MDS 9124 is ready to deploy with minimal configuration and requires no training to operate

and divider lines so you can clearly see each extension

Polycom VVX Expansion Module (2200-46350-025)

Analog Modems

Each Panasonic TS4100 supports up to four lines and features a speakerphone

Samsung Enterprise SMT-i5230D IP Phone SIP 5 Button Handsets The Cisco MDS 9124 isSamsung SIP SMT i5230D IP Phone 5 Button Description: The Samsung SMT i5230D is a SIP based IP phone. The SMT i5230D is not compatible with OfficeServ phone systems, but instead used the open standards SIP firmware. The phone is broadly compatible with several systems including Asterisk and RingCentral. Samsung SMT i5230D Features: 5 Programmable Keys Self Labeling LCD Screen for Keys Message Waiting Indicator Light Backlit Display Included: Samsung