imsi identification work only if echo off

[532910]

if I put

[dongle]
imei=<IMEI>

in dongle.conf all works fine

but

[dongle]
imsi=<IMSI>

works only after ATE0

[archekb]

+1 It's true, if i use only imsi, after unplug and plug dongle again, chan dongle can't connect to dongle and shows:

asterisk*CLI> dongle show devices
ID Group State RSSI Mode Submode Provider Name Model Firmware IMEI IMSI Number
gsm912xxxxxxx 0 Not connec 0 0 0 NONE Unknown
gsm965xxxxxxx 0 Not connec 0 0 0 NONE Unknown

but if i add imei, it's works fine, unplug and then plug again works correct.

@532910 Thank you!