Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Guide That Contains This Content
[+] Expand All
[-] Collapse All

    SRX210 Services Gateway 3G ExpressCard Overview_test

    This topic provides an overview of the SRX210 Services Gateway 3G ExpressCard and it includes the following sections:


    Wireless WAN access is becoming widely available and comparably priced to ISDN and DSL. The SRX210 Services Gateway provides support for a wireless interface as a backup for primary interfaces such as Gigabit Ethernet or Fast Ethernet.

    To facilitate wireless connectivity, the SRX210 Services Gateway has a 3G port with an ExpressCard interface on the back panel. For more information on the SRX210 Services Gateway back panel, see SRX210 Services Gateway Front Panel and Back Panel Views (Low Memory, High Memory, and PoE Versions).

    Supported Modem Types

    Table 1 lists the modem types supported on the SRX210 Services Gateway.

    Table 1: Juniper Networks Wireless Modems Supported by the SRX210 Services Gateway

    Wireless Cards

    Release Supported

    EXPCD-3G-CDMA-V: 3G EVDO ExpressCard for Verizon Wireless. Currently available from Juniper Networks.

    Junos OS Releases 9.6, 10.0, 10.1, and 10.2

    EXPCD-3G-CDMA-S: 3G EVDO ExpressCard for Sprint. Currently available from Juniper Networks.

    Junos OS Releases 9.6, 10.0, 10.1, and 10.2

    Sierra Wireless AirCard 880E/881E supporting Global System for Mobile Communications (GSM) High-Speed Packet Access (HSPA) ExpressCard. Not available from Juniper Networks.

    Junos OS Releases 9.5 and 9.6

    Sierra Wireless AirCard AC501/AC502 supporting GSM and High-Speed Uplink Packet Access (HSUPA). Not available from Juniper Networks.

    Junos OS Releases 10.1 and 10.2

    Sierra Wireless AirCard AC503 ExpressCard supporting GSM, HSPA, and Universal Mobile Telecommunications System (UMTS) Networks. Not available from Juniper Networks.

    Junos OS Releases 10.4, 11.1, and 11.2

    Using the 3G ExpressCard

    To use the ExpressCard, you plug it into the 3G ExpressCard slot, enabling you to dial a wireless call to the 3G wireless service provider network, which acts as an Internet gateway.

    To use the 3G ExpressCard as a backup interface, you can use the dialer feature available in the services gateway.

    For more information on configuring the 3G ExpressCard, see the Junos OS Interfaces and Routing Configuration Guide.

    Caution: The 3G ExpressCard is not hot-swappable on the SRX210 Services Gateway.

    Key Features

    The 3G ExpressCard provides the following key features:

    • Onboard Subscriber Identity Module (SIM) — All GSM cards have an onboard SIM. The service provider populates this SIM with the subscriber service parameters.
    • Onboard nonvolatile RAM (NVRAM) — The Code Division Multiple Access (CDMA) cards have an onboard NVRAM.
    • Activation of new cards through the CLI — You can activate CDMA ExpressCards from the Junos OS CLI.
    • Unlocking ExpressCards — You can unlock GSM ExpressCards from the Junos OS CLI. If the SIM is locked, you need to unlock it before making a call.

      Note: Only GSM cards support locking and unlocking of the SIM.

    • Interface support — The ExpressCard interface supports the IP over PPP interface from the network through the wireless link.
    • Dial-out support — The dialer interface can place calls and has multiple features such as dial-backup, dialer-watchlist, and dialer-filter. The dialer interface can use the ExpressCard to support this feature.

      Note: The 3G ExpressCard does not support the dial-in feature.

    • Card information availability — You can use CLI commands to obtain information on the ExpressCard, such as type, version, wireless status, and user profiles.
    • Security

      • GSM cards support PIN lock to prevent unauthorized access and use of the wireless account.
      • You can use the CLI request commands to lock or unlock the SIM card.
      • You have the option to store the PIN code you provide in the services gateway configuration , so that the SIM can be unlocked without user intervention on each reboot or reset on the box.

      Note: Currently all GSM cards support PIN-protected SIMs.

    Physical Specifications

    Table 2 lists the physical parameters of the 3G ExpressCard.

    Table 2: 3G ExpressCard Physical Specifications




    Standard ExpressCard with 34 modules

    ExpressCard width

    1.33 in. (34 mm)


    0.19 in. (5 mm)

    Connector pins


    Max power consumption

    1.3 watts

    Voltage supply

    • 3.3 V (primary source)
    • 1.5 V (secondary source)

    Published: 2012-07-12