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How many MSUs for a SMS (160 chars)

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Dialogic SS7 and SIGTRAN Signalling

How many MSUs for a SMS (160 chars)

  • Hi,

    I would like to know about more information for following points,

     1. How many MSUs will transmit for single SMS (160 chars)?

     2. Is there any way to reduce MSUs for a SMS?

    Please share your thoughts on my above queries.

    Thanks,

    Ravi. 

  • Hi,

    Can anybody help on my queries !!!

    Thanks,

    Ravi

  • It depends if you send or receive and where you sit in the network.

    in some cases, you will need 4x MSUs, in other cases, only 2.

    It's not possible to reduce the amount of MSUs per SMS.

  • try sending the SMS as MAP Phase 1 SMS and you should be able to send 160 char 7bit encoded SMS using 2 MSU(1 for request and 1 for response). I don't think you can go below 2. Anything above phase 1 it depends on other things like the length of the digits used in various layers like SCCP or MAP etc. Ultimately you can only send 272 octets in MTP3 including the routing label so any upper layer(SCCP/TCAP/MAP) will be constrained by that.