# MC8795V Voice Call problem **URL:** \ **Category:** MC/EM Series\ **Created:** [February 19, 2014, 9:02am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040 "2014-02-19T09:02:24Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![rifattursen](https://avatars.discourse-cdn.com/v4/letter/r/5f9b8f/32.png) [@rifattursen](https://forum.sierrawireless.com/u/rifattursen)\ **Post date:** [February 19, 2014, 9:02am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/1 "2014-02-19T09:02:24Z")
Hello, I am trying to make a phone call with a MC8795V to no avail. The modem is in direct ip mode. When I issue a “atd” command I receive okey but nothing happens. I made a list of the commands below. I would be most happy if you can guide me in troubleshooting this problem at+cpin? at+cpin? +CPIN: READY OK at+creg? at+creg? +CREG: 0,1 OK at+cops? at+cops? +COPS: 0,0,“TURKCELL”,2 OK atd054335162; (Note that I omitted the last 2 digits) atd054335162; OK OK * * * I also tried calling from an other phone to the modem, I can see the “ringing” message but when I issue an ATA command to answer it, the connection automatically hangs up at!swicallprog =1 at!swicallprog =1 ok RING !SWICALLPROG: 1,1,4,0,0,“054335162”,128 RING ata; ata; OK At this point, the connection automatically hangs up. Can you please guide me about this problem? Thanks a lot for your time rifo ---
**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\ **Post date:** [February 19, 2014, 10:08am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/2 "2014-02-19T10:08:46Z")
Hi, That’s strange. I tested with FW K2\_0\_7\_30AP successfully. What FW are you using? ---
**Author:** ![rifattursen](https://avatars.discourse-cdn.com/v4/letter/r/5f9b8f/32.png) [@rifattursen](https://forum.sierrawireless.com/u/rifattursen)\ **Post date:** [February 19, 2014, 10:33am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/3 "2014-02-19T10:33:51Z")
Hello, Thanks a lot for your response. I have checked my firmware number. It’s K2\_0\_7\_46CAP Do you think that I need an update? at+gmr at+gmr K2\_0\_7\_46CAP C:/WS/FW/K2\_0\_7\_46CAP/MSM6290/SRC 2010/12/13 22:29:01 One more thing is, I don’t think this is the case but is it possible that I need a hardware specific arrangement so that voice calls are active. Thanks a lot Rifat Türsen ---
**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\ **Post date:** [February 26, 2014, 9:56am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/4 "2014-02-26T09:56:45Z")
hardware specific means?? i just used MC standalone and checked… lemme check for any FW updates for you… or else, you can get the FW thru your distributor also… ---
**Author:** ![rifattursen](https://avatars.discourse-cdn.com/v4/letter/r/5f9b8f/32.png) [@rifattursen](https://forum.sierrawireless.com/u/rifattursen)\ **Post date:** [February 26, 2014, 2:58pm UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/5 "2014-02-26T14:58:36Z")
Hello Alex, By hardware specific, I was referring to any kind of external circuitry necessary for voice services. The thing is, I am only using MC8795 for data communication hence I don’t have any external circuitry regarding the voice communication. But recently a customer (for some reason) required that a SAR test (for voice services) should be done. Anyway, since you used MC standalone, I guess that shouldn’t be a problem. I would be most happy if you can check any FW updates because I am almost sure that it will take quite a long time if I go through my distributor. Thanks a lot for your help:) ---
**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\ **Post date:** [March 5, 2014, 9:22am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/6 "2014-03-05T09:22:47Z")
standalone means i did not use any external circuitary… well, is the issue happening with other service providers also or is it specific to one service provider… can u check the FW over here : [http://developer.sierrawireless.com/Resources.aspx#&&filter=Devices-eq-(4FF0DC94-950B-4D01-8E69-11A3616D3A74)](http://developer.sierrawireless.com/Resources.aspx#&&filter=Devices-eq-(4FF0DC94-950B-4D01-8E69-11A3616D3A74)) The software downloads section… nd SAR test… umm… i dont have much idea about that… i have just issued the command what u did… but yes, for you it seems to be issue while receiving the call also… lets c if above FW works… Please share the results! ---
**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\ **Post date:** [March 5, 2014, 9:31am UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/7 "2014-03-05T09:31:41Z")
nd yes… how would you communicate by voice… external circuitary is definitely neede… but first of all… let’s solve your issue with automatic hang up… ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [March 5, 2014, 12:46pm UTC](https://forum.sierrawireless.com/t/mc8795v-voice-call-problem/7040/8 "2014-03-05T12:46:24Z")
> [@Rex\_alex](#): > > how would you communicate by voice… external circuitary is definitely neede… Can it not play recorded audio samples? Or do DTMF detection ❓