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IN in GSM

Viewing 13 posts - 31 through 43 (of 43 total)
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  • 13th January 2017 at 11:46 #37837
    Wallis Dudhnath
    Guest

    Hi Eleni,

    You will need to confirm that the Roamers have CAMEL flags set in the HPLMN. You will need to check this with the HPLMN CSP. Next step is to use a protocol analyser with a trace to look at the CAP V2 and MAP messages that are exchanged between the VPLMN (your Network) and the HPLMN. There maybe a node in the signalling chain that is “filtering” the IDP. Check what SS7 Policing Masks you have on your egress routes.

    VBR/ Wallis Dudhnath

    25th January 2017 at 13:47 #37838
    eleni
    Guest

    VPLMN roaming network support CAMEL PHASE 3 and
    our subscriber which perform LOCATION UPDATE in VPLMN support PHASE 2

    OUR SUBSCRIBER COULD PERFORM MOC CALLS
    WITH SUCCEESS OR NO ?

    27th January 2017 at 12:17 #37839
    Wallis Dudhnath
    Guest

    Location update to the VLR (VPLMN MSC/VLR) is done via MAP, e.g. MAP V3.
    CAMEL is a Network Protocol that uses CAP (e.g. CAP V2/V3) and MAP (e.g. MAP V2 / V3).

    Protocols have been designed to allow a degree of “auto-bauding”. MOC calls can be made.

    16th March 2017 at 14:15 #37840
    eleni
    Guest

    prepaid subscriber has been performed LU
    in vplmn network (roaming)
    it could not charge for voice calls (before and after the same balance), but could charge for GPRS.
    could you please help me?

    16th March 2017 at 15:31 #37841
    Wallis Dudhnath
    Guest

    For cAP V3 there is a relationship between the gprsSSF (SGSN)and the gsmSCF (SCP). This is different from the Call Control that is used to control Voice / Telephony. Check that your CAMEL node is equipped, i.e.
    configured, for CAP V3 Call Control. Maybe you just have a data License implemented that
    allows you to use CAP V3 for pure GPRS sessions.

    VBR/ Wallis Dudhnath

    22nd March 2017 at 05:26 #37842
    Wallis Dudhnath
    Guest

    Hi Eleni,

    Any updates?

    Did you check if you have Call-Control (CC) with your version of CAP V3. Assume that the configuration you have is that you will use CC your deployed MSC/VLR/gsmSSF. For GPRS, the gprsSSF will be used for pure data sessions.

    VBR/ Wallis Dudhnath

    22nd March 2017 at 09:54 #37843
    ELENI
    Guest

    Thanks for your answer

    we and vplmn network support cap version2 and also

    i change the camel data to msisdn number and prepaid platform is configured to
    receive calls for recharge (for vplmn network)

    i took the same result

    before and after call credit is the same

    25th March 2017 at 09:15 #37844
    Wallis Dudhnath
    Guest

    Thanks Eleni,

    CAP V2 has been around for a long time. The Call Flow Use Case(s) is well established for Telephony between the
    gsmSSF and the gsmSCF / SDF entities.

    For your “converged” Charging Prepaid platform for Voice / Data I am assuming that CAP V3 (GPRS Data) and CAP V2 is integrated onto the same platform (gsmSCF / SCP / SDF). Next step is now to look at the Tariff Plan configuration and the “buckets” that have been configured for Voice, Voice-Roaming, Data, SMS, etc..

    Mediated CDRs will also help to understand what has happened with the Voice session.

    VBR/ Wallis Dudhnath

    2nd June 2017 at 11:42 #37845
    raffi
    Guest

    I want this document

    30th January 2018 at 10:25 #37846
    ELENI
    Guest

    Inbound ROAMER Prepaid try to perform LU
    to our network.
    In our MSS , IDP produced (invoke initial IDP)
    their Home IN answer to us (invoke establish Temporary connection)
    after that we sent (return error ETC failed)
    and finally the foreign network sent
    abort dtid
    thanks

    31st January 2018 at 11:55 #37847
    Wallis Dudhnath
    Guest

    Thanks Eleni. I was expecting to see DFC / AC / etc.. followed by a Connect().

    Anyhow, thanks for the update.

    VBR/ Wallis Dudhnath

    2nd February 2018 at 10:49 #37848
    ELENI
    Guest

    So i can see

    from my network I TAKE
    (return error ETC failed)

    when i try to make LU with prepaid roamer

    Do you have any idea?

    postpaid LU is ok
    thanks!!!!!

    3rd February 2018 at 11:36 #37849
    Wallis Dudhnath
    Guest

    Hi Eleni,

    ETC implies that the 3GPP OCS (HPLMN) is connecting to a gsmSRF/assisting_gsmSSF.
    Looks like it is trying to setup a session to send an announcement menu.

    I would ask the HPLMN operator to explain their current setup with their OCS solution.

    VBR/ Wallis Dudhnath

    Note: OCS: Online Charging System that is used for Realtime Charging for Voice (CAP V2 / V3) and Data (Gy).

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