Media Types

Each type of interface on a Services Router uses a particular medium to transmit data. The physical wires and data link layer protocols used by a medium determine how traffic is sent. Services Routers support the following media types:

• Asynchronous Transfer Mode over asymmetric digital subscriber line (ATM-over-ADSL) interface (all J-series models except J2300)

  Note: Services Routers with ADSL PIMs can use PPP over Ethernet (PPPoE) and PPP over ATM (PPPoA) to connect through ADSL lines only, not for direct ATM connections.

• Asynchronous Transfer Mode over symmetrical high-speed digital subscriber line (ATM-over-SHDSL) interface

  Note: Services Routers with SHDSL PIMs can connect through SHDSL lines only, not for direct ATM connections.

• Channelized E1 interface
• E1 interface
• E3 interface (J4350, J6300, and J6350 models only)
• Fast Ethernet interface
• Gigabit Ethernet interface (J4350 and J6350 models only)
• Integrated Services Digital Network (ISDN) BRI interface
• Serial interface (EIA-530, RS-449/422, RS-232, V.35, and X.21 line protocols)
• Channelized T1 interface
• T1 interface
• T3 interface (also called DS3) (J4350, J6300, and J6350 models only)

You must configure each network interface before it can operate on the router. Configuring an interface can define both the physical properties of the link and the logical properties of a logical interface on the link.