The MX60 Access Getaway offers a maximum capacity of 48 FXS and/or FXO lines, making it suitable for medium-enterprise service-provider deployments. The MX60 gateway is typically used to connect analog telephone terminals, PBXs or key systems and fax terminals to the IP network through FXS ports, and to interconnect IP networks to the PSTN through FXO ports. As shown in the chart below, these interfaces are available in 12 different combinations.