Indicates that communication cannot receive short messages.

If you don't receive the message, it will be intercepted. The SMS sent by the roll call communication is automatically considered as spam by the mobile phone system and rejected by the firewall, so the roll call communication needs to be whitelisted. Dianming Communication is a software developed by Nanjing Dianming Software Technology Co., Ltd., which is mainly responsible for recording the contents of calls and short messages.