CATALYST 6000 8 PORT VOICE E1 AND SERVICES MODULE
2PORT 2ND GEN MULTIFLEX TRUNK VOICE/WAN CARD-T1/E1
2-PORT 2ND GEN MULTI TRUNK VOICE/WAN INT CARD-G703
1PORT 2ND GEN MULTIFLEX TRUNK VOICE/WAN CARD-T1/E1
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)