# PAP or CHAP

**URL:** <https://forum.sierrawireless.com/t/pap-or-chap/1113>\
**Category:** Open AT\
**Created:** [February 21, 2007, 1:03am UTC](https://forum.sierrawireless.com/t/pap-or-chap/1113 "2007-02-21T01:03:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![binooetomo](https://avatars.discourse-cdn.com/v4/letter/b/41988e/32.png) [@binooetomo](https://forum.sierrawireless.com/u/binooetomo)\
**Post date:** [February 21, 2007, 1:03am UTC](https://forum.sierrawireless.com/t/pap-or-chap/1113/1 "2007-02-21T01:03:08Z")

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Dear Experts.

Which one between PAP or CHAP is used by OpenAT GPRS to do authentication agains the operator’s bearer ?

Sincerely  
-bino-