I use WISMO228, firmware version = L10a02gg.WISMO228 100310
After GPRS connected: (got local IP), i start a TCP connection to a server which is unavailable, for example:
after approximately 75 seconds, i got the response
+CME ERROR: 842 (means the destination host is unreachable)
Note that when waiting in 75 seconds above, we cannot send any AT command (the WISMO NOT response anything).
I can’t find any guide to change the TIMEOUT parameter (75 seconds here).
When a normal server is available, this command (WIPCREATE) only take about 3-5 seconds to establish a TCP connection, so i want to reduce the TIMEOUT to about 10-20 seconds.
Is there anyway to change this TIMEOUT? Or make the WISMO return OK before waiting 75 seconds, and we can execute any other AT when waitng for TCP connection established?