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  • 1.  Ultrix GVG Native Protocol Commands

    Posted 05-19-2023 12:15

    We are developing a custom application to communicate with our Ultrix Router using the GVG Native Protocol.

    I am trying to send the following command via Hercules 

    01 4E 30 54 49 09 30 30 37 36 09 30 30 35 41 32 46 04

    What I am trying to do is issue a TI command to route source 90 to destination 118. From what I read on this thread it appears to be formatted properly. What am i missing or doing wrong?

    Thanks,

    Tim



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    Tim Free
    WCAV-TV
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  • 2.  RE: Ultrix GVG Native Protocol Commands

    Posted 05-22-2023 18:45

    Hi Tim, 

    Arent router protocols fun!
    Your formatting looks right. But I think you are rouing Source 91 to Destination 119. 
    GVG native is 0 based so input 90 to output 118 is actually 89 to 117

    89 in HEX is 0059  which is 30 30 35 39 in ascii
    117 in HEX is 0075 which is 30 30 37 35 in Asci 
    01 4E 30 54 49 09 30 30 37 35 09 30 30 35 39.  check sum is 38  (33 38)
    01 4E 30 54 49 09 30 30 37 35 09 30 30 35 39 33 38 04 should be the complete comand. 

    Unfortunately I dont have a frame to test it on right now, but I think I am close. 
    Let me know if this works!



    ------------------------------
    Mike Pomerleau
    Ross Video
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  • 3.  RE: Ultrix GVG Native Protocol Commands

    Posted 05-23-2023 10:49

    I adjusted my code to account for the 0 based GVG native and created the same command you came up with, router did not switch and received N0TI0075005938 in Hercules. Not seeing anything in the logs.



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    Tim Free
    Cjief Engineer
    WCAV-TV
    Charlottesville United States
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  • 4.  RE: Ultrix GVG Native Protocol Commands
    Best Answer

    Posted 05-24-2023 14:41

    Oops the Checksum is wrong. 
    it should be this. I tested it and it is workign on my system. 
    01 4E 30 54 49 09 30 30 37 35 09 30 30 35 39 33 39 04



    ------------------------------
    Mike Pomerleau
    Ross Video
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  • 5.  RE: Ultrix GVG Native Protocol Commands

    Posted 05-24-2023 17:48

    Yes that worked. 

    Had to adjust the checksum routine in my php class and I can now route using the protocol. 

    Now to finish the rest. 



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    Tim Free
    Chief Engineer
    WCAV-TV
    Charlottesville United States
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  • 6.  RE: Ultrix GVG Native Protocol Commands

    Posted 05-25-2023 14:37

    Thanks again for help on this. We now have completed our PHP class to control the router and online.



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    Tim Free
    Chief Engineer
    WCAV-TV
    Charlottesville United States
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  • 7.  RE: Ultrix GVG Native Protocol Commands

    Posted 05-25-2023 15:03

    Thats Great, im glad it worked out!



    ------------------------------
    Mike Pomerleau
    Ross Video
    ------------------------------