3CX PBX in the Cloud
1 year FREE - no ties!
google cloud platform
3CX
Zero Admin
With the new Dashboard
3CX
Bulletproof Security
With SSL certs and NGINX
3CX
Install on $200 Appliance
Intel MiniPC architecture
3CX
New, Intuitive Windows Client
More themes, more UC
3CX
More CRM Integrations
Scripting Interface to add your own
3CX
Improved Integrated Web Conferencing
iOS and Android apps included
3CX
Run On-Premise or in the Cloud
Google, OVH, Windows & Linux
Fast & easy call management
With the 3CX Web Client

什么是SDP – 会话描述协议?

SDP是会话描述协议的缩写,是描述流媒体初始化参数的格式,由IETF作为RFC 4566颁布。流媒体是指在传输过程中看到或听到的内容。

链接:
RFC 4566
什么是SIP?