# Which Modem does Support "good old Phone Calls" via API (+ SMS?)?

**URL:** <https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009>\
**Category:** Uncategorized\
**Created:** [September 9, 2026, 9:39am UTC](https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009 "2026-09-09T09:39:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![I\_AGREE\_BUTTON](https://avatars.discourse-cdn.com/v4/letter/i/f1d935/32.png) [@I\_AGREE\_BUTTON](https://forum.sierrawireless.com/u/I_AGREE_BUTTON)\
**Post date:** [September 9, 2026, 9:39am UTC](https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009/1 "2026-09-09T09:39:07Z")

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Hi every one.  
I looking for an solution for Areas where a “normal Cellphone” have no coverage so an external (Car) Antenna would give more signal strengh. In the Case no VoIP Data is going truth the Cell Phone Connection the could switch to an “good old Phone Call”.  
So what Modem does support Voice, Data and SMS in Europe?  
Thanks

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 9, 2026, 10:15am UTC](https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009/2 "2026-09-09T10:15:48Z")

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do you want LGA module or M.2 form factor?

M.2:

> **[WP7607 Mini Card Accessory Board](https://www.sierrawireless.com/iot-modules/4g-modules/wp7607-accessory-board/)**
>
> The WP7607 Mini Card Accessory Board is part of the MC Series offering unprecedented LTE speeds, bandwidth, and network performance on the PCI Express Mini Card form factor commonly used in networking equipment.

LGA modules:

> **[Smart Modules](https://www.sierrawireless.com/iot-modules/smart-modules/)**
>
> What is important when choosing a smart module? Find out how IoT smart modules with edge processing can simplify and secure your IoT developments.

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<div class="post-metadata">

**Author:** ![I\_AGREE\_BUTTON](https://avatars.discourse-cdn.com/v4/letter/i/f1d935/32.png) [@I\_AGREE\_BUTTON](https://forum.sierrawireless.com/u/I_AGREE_BUTTON)\
**Post date:** [October 10, 2026, 3:43pm UTC](https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009/3 "2026-10-10T15:43:26Z")

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Thanks sadly nobody else replayed.

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<div class="post-metadata">

**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [October 10, 2026, 4:19pm UTC](https://forum.sierrawireless.com/t/which-modem-does-support-good-old-phone-calls-via-api-sms/36009/4 "2026-10-10T16:19:58Z")

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do you want LGA module or M.2 form factor?