Description of erm function – 2N StarGate/BlueTower v5.4 User Manual
Page 146
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146
Description of ERM Function
After start, the ERM is connected automatically to the defined GSM gateways,
activating the external call routing process in them. During this process, the GSM
gateway automatically sends information on any new call to the ERM and awaits reply
with call instructions within 2 seconds. If no reply comes from the ERM within this
timeout, the call is routed according to the internal routing tables.
The functional diagram below shows the request processing procedure:
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