In the documentation for AT+CIPSTART argument `port` at https://room-15.github.io/blog/2015/03/26/esp8266-at-command-reference/#AT+CIPSTART type of argument is `Integer` not `String`: ``` [14:44:04:593] AT+CIPSTART=0,"TCP","192.168.1.48","10000"␍␍␊ [14:44:04:593] ␍␊ [14:44:04:593] ERROR␍␊ [14:44:16:829] AT+CIPSTART=0,"TCP","192.168.1.48",10000␍␍␊ [14:44:16:845] 0,CONNECT␍␊ [14:44:16:845] ␍␊ [14:44:16:845] OK␍␊ ```
In the documentation for AT+CIPSTART argument
portathttps://room-15.github.io/blog/2015/03/26/esp8266-at-command-reference/#AT+CIPSTART
type of argument is
IntegernotString: