# Audio calls work fine in WP7610 but no audio is heard on WP7609 **URL:** \ **Category:** Legato Application Framework\ **Created:** [October 26, 2020, 2:09pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470 "2020-10-26T14:09:03Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![chrisc](https://avatars.discourse-cdn.com/v4/letter/c/8baadc/32.png) [@chrisc](https://forum.legato.io/u/chrisc)\ **Post date:** [October 26, 2020, 2:09pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/1 "2020-10-26T14:09:03Z")
Hi All, I’ve been working with the WP7609 and WP7610 modems specifically around voice calls. I’ve successfully tested voice call functionality on the WP7610, however, when I attempt to use the same code with the WP7609 no audio is heard in the phone call. When I check the device log, I see the following error messages: Oct 23 18:37:52 swi-mdm9x28-wp user.info Legato: INFO | VoiceManagerExe[886]/VoiceManager T=main | debug.cpp Log() 37 | VoiceManager: Call: INCOMING from +1xxxxxxxxxx Oct 23 18:37:52 swi-mdm9x28-wp user.warn Legato: -WRN- | modemDaemon[892]/le\_pa T=main | pa\_sim\_qmi.c MapSimState() 1009 | More than one application 2 Oct 23 18:37:52 swi-mdm9x28-wp user.info Legato: INFO | MainApp[880]/modem\_access T=main | debug.cpp Log() 37 | Main: Answering incoming voice call. Oct 23 18:37:52 swi-mdm9x28-wp user.warn Legato: -WRN- | audioDaemon[855]/le\_pa\_audio T=unknown | pa\_audio.c CallHandler() 375 | CallHandler called Oct 23 18:37:52 swi-mdm9x28-wp user.warn Legato: -WRN- | audioDaemon[855]/le\_pa\_audio T=unknown | pa\_audio.c CallHandler() 427 | Identify call ID 1 Oct 23 18:37:52 swi-mdm9x28-wp user.info Legato: INFO | modemDaemon[892]/le\_pa T=unknown | pa\_mcc\_qmi.c CallHandler() 689 | QMI ID.1 State.CONVERSATION (0x03) Type.0x00 Dir.0x02 Mode.0x03 Mparty.0 ALS.0 Oct 23 18:37:52 swi-mdm9x28-wp user.info Legato: INFO | VoiceManagerExe[886]/VoiceManager T=main | debug.cpp Log() 37 | VoiceManager: Call: CONNECTED from +1xxxxxxxxxx **[95.472346] Circuit-Switch Voice: ASoC: no backend DAIs enabled for Circuit-Switch Voice** **[95.492671] voc\_end\_voice\_call: Error: End voice called in state 0** **[95.513708] Circuit-Switch Voice: ASoC: no backend DAIs enabled for Circuit-Switch Voice** **[95.521455] voc\_end\_voice\_call: Error: End voice called in state 0** Oct 23 18:37:53 swi-mdm9x28-wp user.err kernel: [95.472346] Circuit-Switch Voice: ASoC: no backend DAIs enabled for Circuit-Switch Voice\*\* Oct 23 18:37:53 swi-mdm9x28-wp user.err kernel: [95.492671] voc\_end\_voice\_call: Error: End voice called in state 0 Oct 23 18:37:53 swi-mdm9x28-wp user.err kernel: [95.513708] Circuit-Switch Voice: ASoC: no backend DAIs enabled for Circuit-Switch Voice Oct 23 18:37:53 swi-mdm9x28-wp user.err kernel: [95.521455] voc\_end\_voice\_call: Error: End voice called in state 0 This looks like the WP76xx modem binary driver is throwing kernel errors, but I have no idea what they actually mean. We are seeing this on UMTS/HSPA only while in North America, however, we are seeing similar symptoms in Australia. Any help would be appreciated. Thanks, Chris ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [October 26, 2020, 2:56pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/2 "2020-10-26T14:56:28Z")
Are you testing the latest FW R16? ---
**Author:** ![chrisc](https://avatars.discourse-cdn.com/v4/letter/c/8baadc/32.png) [@chrisc](https://forum.legato.io/u/chrisc)\ **Post date:** [October 26, 2020, 3:01pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/3 "2020-10-26T15:01:39Z")
No. We are using 13.3 for the WP7609, and 13.2 for the WP7610. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [October 26, 2020, 3:02pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/4 "2020-10-26T15:02:10Z")
is it possible to give a try on latest FW? ---
**Author:** ![chrisc](https://avatars.discourse-cdn.com/v4/letter/c/8baadc/32.png) [@chrisc](https://forum.legato.io/u/chrisc)\ **Post date:** [October 26, 2020, 3:05pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/5 "2020-10-26T15:05:40Z")
I don’t see an R16 release for the WP7609… [R16 (Generic — GCF & PTCRB)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/0320d523db32497c91ec66fb25caa83f.ashx) — WP7601, WP7603, WP7607, WP7610, WP7611 [R16 (AT&T — PTCRB)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/56243e20a63e4d6c9c34188ad1653ec0.ashx) — WP7603, WP7610, WP7611 [R16 (Sierra Wireless — GCF)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/0e45f375a0e8421d9bfc137ce934bd4c.ashx) — WP7603, WP7607, WP7610, WP7611 [R16 (Sprint](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/eb77674fdb324e53957a005c19267d14.ashx)[— GCF)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/56243e20a63e4d6c9c34188ad1653ec0.ashx) — WP7611 [R16 (T-Mobile](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/9348df143061490eab84080d166a8adc.ashx)[— PTCRB)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/56243e20a63e4d6c9c34188ad1653ec0.ashx) — WP7611 [R16 (Verizon — GCF)](https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-16/-/media/6fbdac1377a3437ba395e409649c3898.ashx) — WP7601, WP7610, WP7611 ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [October 26, 2020, 3:19pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/6 "2020-10-26T15:19:41Z")
can the generic GCF register on your network? ---
**Author:** ![chrisc](https://avatars.discourse-cdn.com/v4/letter/c/8baadc/32.png) [@chrisc](https://forum.legato.io/u/chrisc)\ **Post date:** [October 26, 2020, 4:37pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/7 "2020-10-26T16:37:59Z")
After updating the modem to R16, I was able to successfully make an audio connection on the device. However, I’m a little concerned that the Firmware isn’t listed as supported for the WP7609. And though it works here, it may not work for our customers in Australia who are using WP7609. ---
**Author:** ![plu](https://avatars.discourse-cdn.com/v4/letter/p/e19b73/32.png) [@plu](https://forum.legato.io/u/plu)\ **Post date:** [November 19, 2020, 7:19am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/8 "2020-11-19T07:19:45Z")
hi R16 is under certification for GCF on WP7609, and should be available soon. ---
**Author:** ![jack.heaffey](https://avatars.discourse-cdn.com/v4/letter/j/ad7895/32.png) [@jack.heaffey](https://forum.legato.io/u/jack.heaffey)\ **Post date:** [May 27, 2022, 8:03am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/9 "2022-05-27T08:03:21Z")
Hi, It seems that R16 is still not certified for GCF on WP7609. May I ask when it will be certified? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [May 27, 2022, 10:55am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/10 "2022-05-27T10:55:27Z")
I think it will be in R16.1 later ---
**Author:** ![jack.heaffey](https://avatars.discourse-cdn.com/v4/letter/j/ad7895/32.png) [@jack.heaffey](https://forum.legato.io/u/jack.heaffey)\ **Post date:** [May 30, 2022, 9:32am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/11 "2022-05-30T09:32:35Z")
Thank you for the reply. By “later” do you mean later this year? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [May 30, 2022, 9:49am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/12 "2022-05-30T09:49:09Z")
yes, i think so. BTW, did you contact your distributor? ---
**Author:** ![jack.heaffey](https://avatars.discourse-cdn.com/v4/letter/j/ad7895/32.png) [@jack.heaffey](https://forum.legato.io/u/jack.heaffey)\ **Post date:** [May 30, 2022, 10:00am UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/13 "2022-05-30T10:00:13Z")
Yes and I was told there are no expected updates for WP76xx modules this quarter. I thought I would respond on this forum thread, though, as the WP7609 support for R16 “should be available soon” according to @plu 's comment in November 2020, so was unsure if WP7609 support for R16 had already been released ---
**Author:** ![jack.heaffey](https://avatars.discourse-cdn.com/v4/letter/j/ad7895/32.png) [@jack.heaffey](https://forum.legato.io/u/jack.heaffey)\ **Post date:** [November 28, 2022, 1:40pm UTC](https://forum.legato.io/t/audio-calls-work-fine-in-wp7610-but-no-audio-is-heard-on-wp7609/5470/14 "2022-11-28T13:40:11Z")
I have faced a silent audio issue, please see: > [@No audio on call](https://forum.legato.io/t/no-audio-on-call/6358): > > Hi, I’m using the le\_mcc and le\_audio APIs to establish a phone call and to play samples using le\_audio\_PlaySamples. This works perfectly for the majority of the time, however I have observed occasions whereby the call is successfully established but no audio can be heard on the receiver phone. When the cell module is in this errored state, all future calls are silent until I reboot the module. The issue seems to occur when a phone call is initiated too soon after a previous call is hung up. …