# xbee problem

**URL:** <https://forums.digi.com/t/xbee-problem/2435>\
**Category:** XBee - Zigbee\
**Created:** [March 20, 2011, 9:52am UTC](https://forums.digi.com/t/xbee-problem/2435 "2011-03-20T09:52:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![harbiaarmy](https://avatars.discourse-cdn.com/v4/letter/h/13edae/32.png) [@harbiaarmy](https://forums.digi.com/u/harbiaarmy)\
**Post date:** [March 20, 2011, 9:52am UTC](https://forums.digi.com/t/xbee-problem/2435/1 "2011-03-20T09:52:36Z")

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Hey I have a problem in my x-bee  
When I tested my x-bee in x-ctu program it works very well at the first place but after awhile when I tested it by x-ctu the following message appeared ![]()  
"unable to communicate with modem "

and when I enable API and tested it again the following message appeared on x-ctu  
communication with modem … ok  
Modem type =name unknown(ID=42949672481228488)  
modem firmware version =

Any body have a solution to this problem please help me as soon as possibe

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**Author:** ![shahrj1988](https://avatars.discourse-cdn.com/v4/letter/s/c4cdca/32.png) [@shahrj1988](https://forums.digi.com/u/shahrj1988)\
**Post date:** [March 21, 2011, 5:56pm UTC](https://forums.digi.com/t/xbee-problem/2435/2 "2011-03-21T17:56:44Z")

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Hi,  
This message only appears when, PC com port baud rate and modem(XBee) baud rate are different. Try with the same baud rate with which you had programmed your XBee.