FOUR-PORT VOICE INTERFACE CARD - FXS AND DID
TWO-PORT VOICE INTERFACE CARD- FXS AND DID
FOUR-PORT VOICE INTERFACE CARD - FXO (UNIVERSAL)
TWO-PORT VOICE INTERFACE CARD - FXS (UNIVERSAL)
TWO-PORT VOICE INTERFACE CARD - FXO (UNIVERSAL)
TWO-PORT VOICE INTERFACE CARD - BRI (NT AND TE)
16-CHANNEL PACKET VOICE/FAX DSP MODULE REFURBISHED