Yeastar EX30 Expansion Board for S100/S300 VoIP PBX

Yeastar EX30 Expansion Board for S100/S300 VoIP PBX - Ports: 1x E1/T1/J1 Port - Signalling: PRI, MFC R2, SS7, E&M - E1 PRI Switch Type: EuroISDN, Q.SIG - T1 PRI Switch Type: EuroISDN, National 2, National 1, DMS100, AT&T 4ess, Lucent 5ess, Q.SIG - J1 PRI Swtich Type: EuroISDN, National 2, National 1, DMS100, AT&T 4ess, Lucent 5ess, Q.SIG - Compatible Models: S100, S300 PBX Systems - EX30 - 12 Months Limited Warranty