Two-port Voice Interface Card - FXO (Universal)
Two-port Voice Interface Card - FXS
Two-port Voice Interface Card - E and M
Four-port Voice Interface Card - FXO (Universal)
4 port FXS or DID VIC
Two-port Voice Interface Card - BRI (NT and TE)
Four-Port Voice Interface Card - FXS and DID
Two-port Voice Interface Card - E and M