3.15 +MIPSTAT
This URC is sent to the terminal indicating a change in status. Currently there are two possible
sources of failure, a broken logical connection or a broken physical connection
Syntax:
+MIPSTAT: <socket_ID>,<n>[,<number_of_acknowled_bytes >]
<Parameter> Description
<Socket_ID> A unique number that identifies a connection.
Valid socket numbers - 1, 2, 3 and 4
<n>
0 - ACK indication
1 - Broken protocol stack
2 - Connection closed automatically due to non-fatal alert
<number_of_acknowled_bytes > Total number of bytes that were acknowledged
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Basicamente te informa que se rompio el protocolo al cerrarse la transmision, mas me parece que recibis eso y no envias.
Segun algunos ejemplos incluso cuando usas un MIPCLOSE, es decir terminado por el servidor remoto, recibis por igual esa linea.