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 asymmetrical digital subscriber line (ATM-over-ADSL) interface (J4300 and J6300 models only)

  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 (J4300 and J6300 models only)

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

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