Have just received a voice enabled firmware for the MC7304 from our distributor (04.05.23.00). On first experimentation, voice call is only possible when I force the module to use ONLY GSM bands:
If I leave the module open to ALL BANDS (AT!BAND=00) I simply receive a busy tone when I call the device. I have ensured using AT!SELMODE that both CS and PS service domains are active. Has anyone else had any experience of getting the device to accept/make CS voice calls when connected to the WCDMA network?
Are you testing with live network?
And how about using !BAND=8 (WCDMA ALL)?
For my case, using MC7304 (FW 04.05.19.00) with live LTE network, setting !BAND=0.
On receiving voice call, it automatically fallback to WCDMA from LTE and ring, and I am able to answer the call.
On outgoing call, again, it fallbacks to WCDMA then remote party ring.
I am guessing network issue or your MC7304’s configuration cause the issue.
Is it possible for you to check with your local FAE/distribator to see if any specific setting required for the network you used?
Could you suggest any voice dialing software that works with MC7304?
For now, I have found nothing compatible, unfortunately.
I think there must be some version of Watcher (or Skylight:)) that supports dialpad and MC7304 simultaneously, right?
I am using the live network, using a vodafone 3G sim. Current status is:
-> When forced to GSM (!BAND=5) I can make calls from the module. Cannot receive any calls.
-> When allowed into any band, no calls can be made/recieved (all fail with NO CARRIER)
I have also been able to test with an EE 4G SIM:
-> When on LTE network and make a call from MC7304, correctly fall-back to WCDMA but call fails with NO CARRIER.
-> When on WCDMA network, no calls can be made/received (NO CARRIER)
-> When on GSM network, no calls can be made/received (NO CARRIER)
-> Have tested the SIM in a normal handset and can make/receive all calls
Could it be configuration? Is there a factory reset command? Have tried AT!RMARESET but gives ERROR.
I’m not sure, using the Voadfone 3G SIM in an Option GTM609W module allows calls to be made AND received in both WCDMA_ONLY and GSM modes. Suggests to me that it is a module configuration issue. Not sure why the EE SIM dosen’t work at all…
What AT commands do you issue to dial? ATD01483… for example?
I have notified our local FAE, waiting on a reply from them. I wonder if its FW issue, is there any possibility of someone testing on our FW version (04.05.23.00)?
Little bump. Lotam, is it possible for someone at Sierra to test the MC7304 calling functionality with the 04.05.23.00 firmware? Still at no solution and it seems it isn’t a clear network problem as the Option GTM609W module can receive and send calls using the same SIM.
An additional factor to add is that SMS sending is hanging the QMI SDK? Can recieve messages fine but sending using the SMS Sample Application causes the SDK to hang (using SDK 03_02_03)
Still no joy on this. Has anyone at Sierra had a chance to look at the logs I provided? Specifically the incoming calls…which show the CS voice call failing after the network has paged the device with incoming call requests.
Problem fixed with help from Lotam and FAE distributor. An NV item on the device had been miss-set at the factory. AT!NV?5280 now reads: 00 00 00 00 00 00 00 00 and all CS voice calls appear to connect.