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โ19-06-2025 13:39 PM
Is it possible to make full SIP calls with a mobile subscription?
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โ20-06-2025 23:14 PM
SMARTY does not officially support SIP (Session Initiation Protocol) for VoIP (Voice over Internet Protocol) calls. While some users have reported success using SIP with SMARTY, it's not a guaranteed or officially supported feature. SMARTY's network uses CGNAT, which can cause issues with maintaining the necessary connections for SIP to function properly.
Here's a more detailed explanation:
- SMARTY's stance:SMARTY explicitly states that they do not support VoIP devices or services.
- CGNAT limitations:SMARTY uses Carrier-Grade Network Address Translation (CGNAT), which can interfere with SIP's ability to maintain a persistent connection.
- Possible workarounds:Some users have reported that tweaking SIP settings, like using a shorter SIP OPTIONS interval, can help. However, this is not a guaranteed solution.
- Alternative VoIP solutions:If you need VoIP, you may need to explore alternative providers or consider using a service like Skype that offers virtual numbers and VoIP capabilities.
- Mobile data and VoLTE:SMARTY does support VoLTE (Voice over LTE), which allows for voice calls over the 4G network, but this is a separate technology from SIP.
Hope this helsp x
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โ20-06-2025 23:14 PM
SMARTY does not officially support SIP (Session Initiation Protocol) for VoIP (Voice over Internet Protocol) calls. While some users have reported success using SIP with SMARTY, it's not a guaranteed or officially supported feature. SMARTY's network uses CGNAT, which can cause issues with maintaining the necessary connections for SIP to function properly.
Here's a more detailed explanation:
- SMARTY's stance:SMARTY explicitly states that they do not support VoIP devices or services.
- CGNAT limitations:SMARTY uses Carrier-Grade Network Address Translation (CGNAT), which can interfere with SIP's ability to maintain a persistent connection.
- Possible workarounds:Some users have reported that tweaking SIP settings, like using a shorter SIP OPTIONS interval, can help. However, this is not a guaranteed solution.
- Alternative VoIP solutions:If you need VoIP, you may need to explore alternative providers or consider using a service like Skype that offers virtual numbers and VoIP capabilities.
- Mobile data and VoLTE:SMARTY does support VoLTE (Voice over LTE), which allows for voice calls over the 4G network, but this is a separate technology from SIP.
Hope this helsp x
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โ20-06-2025 23:34 PM
Thanks. I was afraid so.

