I’m using the WP7702 chip to communicate by LTE. At startup, I connect the 4G to the network without problems. Then, the chip seems sending a keep alive each 27s. This is the only time slot the modem is able to respond to pings or TCP connections. It seems the modem keep online for 2-3 seconds b…

does this help by disabling eDRX mode? [image] WP7702 TCP no answer after 2s WP Series Also you can have a look here: I wonder if this is related to RRC_IDLE, also you can bring it back to RRC CONNECTED by just doing a simple TCP transfer such as keep-alive packet. In …

Hello and thanks for the reply. After testing the AT command CEDRXS = 0, the modem reply better. however In the project, the challenge is to have the minimum of data communication (to reduce provider costs). With CEDRXS = 0, the modem seems sending data or keep alive each 12-15s instead of 27-30s…

didn’t you can control when to send the keep alive packet?

I didin’t checked about the Keep alive configurations, but by default, as I see, the Keep alives are sent each 32s, I think it could be ok

The issue seems solved with the command AT+CEDRXS=0 Thanks

Port closed between TCP connection interval

IoT Modules WP Series

jyijyi June 19, 2023, 4:14pm 2

does this help by disabling eDRX mode?

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Port closed between TCP connection interval

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