# UART Mapping 8792V/8795V **URL:** \ **Category:** General wireless topics\ **Created:** [December 4, 2013, 12:40pm UTC](https://forum.sierrawireless.com/t/uart-mapping-8792v-8795v/6890 "2013-12-04T12:40:49Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Buzze11](https://avatars.discourse-cdn.com/v4/letter/b/7ba0ec/32.png) [@Buzze11](https://forum.sierrawireless.com/u/Buzze11)\ **Post date:** [December 4, 2013, 12:40pm UTC](https://forum.sierrawireless.com/t/uart-mapping-8792v-8795v/6890/1 "2013-12-04T12:40:49Z")
Do I have to setup the AT!MAPUART=1 from USB? Or is this command also possible via UART? My problem is: The Module is used on a pcb, where i have only connection to UART. The main communication seems ok, because i get answers from the Modem. But CMEE=1 doesn`t change the error reporting. AT+CPIN? answers with +CPIN: SIM PINOK but if I try to send pin with AT+CPIN=1234 I only get ERROR. For me it looks like I can only use a small part of the AT commands. I tried to map the UART to expand the AT commands with AT!ENTERCND=“A710” and after that AT!MAPUART=1. Answer is OK but nothing changes… Also some commands just return OK instead of information. e.g. AT+CGSN? returns just ok instead of IMEI Can anyone help me? ---
**Author:** ![tobias](https://avatars.discourse-cdn.com/v4/letter/t/c67d28/32.png) [@tobias](https://forum.sierrawireless.com/u/tobias)\ **Post date:** [December 4, 2013, 1:31pm UTC](https://forum.sierrawireless.com/t/uart-mapping-8792v-8795v/6890/2 "2013-12-04T13:31:29Z")
Assuming you do try with the correct PIN, have you tried with AT+CPIN="" ? ---
**Author:** ![Buzze11](https://avatars.discourse-cdn.com/v4/letter/b/7ba0ec/32.png) [@Buzze11](https://forum.sierrawireless.com/u/Buzze11)\ **Post date:** [December 4, 2013, 1:54pm UTC](https://forum.sierrawireless.com/t/uart-mapping-8792v-8795v/6890/3 "2013-12-04T13:54:45Z")
Yes, I tried already with “”… What about the replies to the IMEI. Why do i just get an OK? Is the default Pass A710 always the same? Because I tried another one and got an OK as reply as well… THX for your answers…