GM862-GPS Software User Guide - SemiconductorStore.com

GM862-GPS Software User Guide1vv0300729 Rev. 4 - 24/01/0727 -59 dBm MMI may indicate 4 antenna bars28 -57 dBm MMI may indicate 4 antenna bars29 -55 dBm MMI may indicate 4 antenna bars30 -53 dBm MMI may indicate 4 antenna bars31 -51 dBm or more MMI may indicate 4 antenna bars99 not detected MMI may indicate flashing antenna barsNOTE: when is less than 6, only 1 MMI antenna bar, the quality of a call will be poor andthe call may even drop. is an integer from 0 to 7 and 99 that reports the received signal quality measured on the radiotraffic channel.NOTE: The quality is measured on the traffic channel, hence it is available only during aconversation, in Idle the reported value must not be considered.In conversation the quality decreases with the increase of the number.NOTE: The value refers strictly to the GSM radio channel and is a very technicalparameter, it can be used to monitor the voice call quality since the voice quality is inverselyproportional to the number.NOTE: For Data calls the signal quality reported is not directly connected to the connectionquality. The reported signal quality refers only to the GSM radio channel link and not to thewhole path from the caller to the receiver, so it may happen that the quality on the GSM radiolink is very good and hence the reported is 0 (good quality) but the quality of theremaining path to the other party is very bad and hence the final data connection quality isvery poor.For this reason the signal quality indicator should not be taken into account to monitordata calls quality.Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 16 of 111