Signal Connection Control Part SCCP is in roaming involved. Who has experience with Evolved-intelligence.com roaming service?
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Price, contracts, lookup details, real insights?
Please let me know your experience with this commercial player. Thank you.
Is there another web platform covering Roaming Agreement EXchange RAEX details countrywise (e.g IRN)?
GSM Association Roaming Database, see here
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The difference between 'remote breakout' in the hPLMN home Public Land Mobile Network and the 'local breakout' in the visited country vPLMN you can learn in SixtySec
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Its obvious that the device receives e.g. Reference Signal Power Receiver (RSPR) radio frequency signals from cell towers far far away, but the mobile is heavily under-powered to send back the long distance signals. So a asymmetric situation does occur. The mobile knows the cell towers, but the cell towers of not know the mobile. Further case details will be revealed when it become available.
In DS (alerted by an external party like police) a highly elevated cell tower functional equipped with a high-precision motorized directional high-gain antenna for long-distance like 30-35km (Master Cell Tower (MCT) starts pointing to the several OCTs in a logic order. By connecting to the OCTs the MCT 'asks' the OCTs one-by-one Did IMSI y say hello to you? If so the OCT responds with timestamp and radio propagation parameters to the MCT. The MCT is located in a kind of star network constellation.
Do not hesitate to ask more questions.
Pardon, I am confused with your post SamBrown. What do you want to say?