Sipnetic

Sipnetic is a free VoIP softphone based on the SIP protocol. It allows you to connect to your VoIP provider, cloud PBX, or an enterprise telephony server.

⚠️ Important note

Sipnetic doesn’t offer a VoIP service. To use Sipnetic you need an account from a SIP service provider. Some features may be not supported by all SIP providers.

Features:

• Compatibility with all standards-compliant VoIP providers and PBXes.

• Supports calling over 3G/4G and Wi-Fi.

• Modern UI.

• Great audio quality provided by the Wideband Opus codec. Legacy codecs, such as G.722, G.711, Speex, and GSM, are also supported.

• Acoustic echo cancellation and automatic gain control.

• Video calls using H.264 codec (Available as a Premium Feature).

• Support for various NAT traversal techniques, including STUN, TURN, and ICE.

• Instant Messaging with text and voice chat capabilities.

• Secure calls based on TLS, SRTP, and ZRTP protocols. End-to-end encryption of chat messages with OTRv3 protocol. ZRTP and OTR support is available as a Premium Feature.

• Integration with system contacts including built-in contact editor.

• Presence information support based on the SIMPLE protocol suite.

• Multiple SIP accounts support with automatic account selection.

• Classic telephony features, such as multiple calls, placing call on hold, sending DTMF digits, voicemail message waiting indication.

• Experimental Walkie-Talkie mode well suited for low-bandwidth links.

• Light and dark UI themes (Available as a Premium Feature).

• No ads, no user tracking, no personal data collection.

• Available in English, German, and Russian.

📹 Video calls experience may vary depending on the device and firmware capabilities. Sipnetic always uses the system implementation of the H.264 codec. Android 5.0 or higher is recommended.

Sipnetic是基于SIP协议的免费VoIP软电话。它使您可以连接到VoIP提供商，云PBX或企业电话服务器。

Important️重要说明

Sipnetic不提供VoIP服务。要使用Sipnetic，您需要来自SIP服务提供商的帐户。并非所有SIP提供商都支持某些功能。

功能：

•与所有符合标准的VoIP提供商和PBX兼容。

•支持通过3G / 4G和Wi-Fi进行呼叫。

•现代UI。

•宽带Opus编解码器提供了出色的音频质量。还支持旧式编解码器，例如G.722，G.711，Speex和GSM。

•回声消除和自动增益控制。

•使用H.264编解码器的视频通话（作为高级功能提供）。

•支持各种NAT遍历技术，包括STUN，TURN和ICE。

•具有文本和语音聊天功能的即时消息。

•基于TLS，SRTP和ZRTP协议的安全呼叫。使用OTRv3协议对聊天消息进行端到端加密。 ZRTP和OTR支持作为高级功能提供。

•与系统联系人集成，包括内置联系人编辑器。

•基于SIMPLE协议套件的状态信息支持。

•多个SIP帐户支持自动帐户选择。

•经典电话功能，例如多个呼叫，保持呼叫，发送DTMF数字，语音信箱留言等待指示。

•实验对讲机模式非常适合低带宽链接。

•浅色和深色UI主题（作为高级功能提供）。

•没有广告，没有用户跟踪，没有个人数据收集。

•提供英语，德语和俄语。

📹视频通话体验可能会因设备和固件功能而异。 Sipnetic始终使用H.264编解码器的系统实现。建议使用Android 5.0或更高版本。