4 thoughts on - T1 with Robbed Bit Signaling

  • So you are using RBS for CO to Asterisk, and SIP for Asterisk to subscriber.

    How does the Telco send you the called party info and you to them? DTMF?
    What signaling system is being used? E&M or?

    We are trying to get DS0 EELs from the Telco via T1s and are not sure what
    their trunk scheme will be. We are guessing it will be RBS T1s with DTMF
    from the customer premises.

    To enhance the question: Is anyone on list getting customer loop EELs from
    a US (AT&T) Telco, and if so, what flavor and other details?

    Cary Fitch


    href=”mailto:bounces@lists.digium.com”>bounces@lists.digium.com] On Behalf Of Jeff LaCoursiere

    All of my T1s are RBS. No PRI service here. Am using both Digium and
    Sangoma cards.
    LaCoursiere
    ============
    So you are using RBS for CO to Asterisk, and SIP for Asterisk to subscriber.

    How does the Telco send you the called party info and you to them? DTMF?
    What signaling system is being used? E&M or ???

    We are trying to get DS0 EELs from the Telco via T1s and are not sure what
    their trunk scheme will be. We are guessing it will be RBS T1s with DTMF
    from the customer premises.

    To enhance the question: Is anyone on list getting customer loop EELs from
    a US (AT&T) Telco, and if so, what flavor signaling, and other details?

    Cary Fitch

  • We have never used more than 2 in one server. We don’t have very high
    traffic levels per location. Multiple people on the list have claimed
    multi-hundred simultaneous channels, though, so I don’t think it is a
    stretch to think you could handle multiple 4 port T1 cards in one box.
    But that point I would worry more about single points of failure.

    Ah. Interesting concept. No Internet connectivity at customer premise?

    j