@Dennis The SMSC (Short Message Service Center) is a store and forward server for messages. What operators do is they will store a message for delivery for a given period of time (Configurable) depending on their storage capacity eg 24,36,72 hours. The other mechanism that operator uses is the delivery attempt whereby the SMSC tries to deliver an SMS for x number of times e.g. tries 5 times the first one hour , tries 3 times the next 2 hours , and after the maximum delivery attempts is attained the message is purged. This is used during high season like Xmas/New year when the traffic is exceptionally high. Once a message is purged from the SMSC a CDR (Call Detail Record) is automatically generated. The CDR has alot of info inclusing A number , B Number , Date and Time , Message Body (Encrypted) etc. The operators will keep the CDRs for as long as they want (Secondary storage). From the CDR the operator can decrypt the message body and that's it!!. BR Joram On Tue, Jan 12, 2010 at 1:00 PM, Dennis Kioko <dmbuvi@gmail.com> wrote:
Some operators seem to delete messages in their system after 24 hours, or why do messages that are more than 24 hours old never get delivered?
-- with Regards:
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