Hi,
I’m running an EG25-G as a SIP-to-cellular voice gateway (via Asterisk + chan_dongle) and cannot make voice calls, IMS fails to register.
Current firmware:
AT+CGMM: EG25
AT+QGMR: EG25GLGDR07A02M1G_01.200.01.200
IMEI: 869387062838553
Carrier: Telstra (Australia, MCC/MNC 505/01)
- All Australian carriers have shut down 2G and 3G - voice requires VoLTE
- The Telstra MBN profile is loaded and active (Telstra-Commercial_VoLTE, index 14)
- AT+QCFG=“ims” returns 1,0 (enabled)
- AT+CGDCONT? shows IMS APN on context 2
- AT+QMBNCFG=“AutoSel”,1 is set
- Data works fine over QMI/ECM (usb0)
Problem: Every ATD returns NO CARRIER. AT+CEER returns 6,267 (IMS not registered). AT+CIREG? returns ERROR (command not supported on this firmware).
What I’ve tried:
- Enabling IMS: AT+QCFG=“ims”,1
- Adding IMS APN: AT+CGDCONT=2,“IPV4V6”,“ims”
- MBN auto-select enabled
- AT+QCFG=“ims/imsTestMode”,1 → ERROR (not supported)
- AT+QCFG=“ims/volte”,1 → not tested yet
- Verified the SIM makes VoLTE calls fine from a Pixel phone (IMS registered, VoLTE available)
Could you provide the latest EG25-G firmware with improved IMS/VoLTE registration for Australian carriers? Ideally a version where AT+CIREG? is supported, so I can debug IMS registration state.
Thanks