What are point-to-point SMS, ussd SMS and sp uplink SMS?

Category: electronic digital >> Other digital products

Problem description:

I found that there are a lot of SMS charges in many mobile phone charges, including point-to-point SMS, ussd SMS and sp uplink SMS. I don't know what they mean and what they are used for. Who can tell me, please? thank you ! ! ! !

Analysis:

Peer-to-peer refers to terminals such as mobile phones or PHS. USSD SMS is an on-demand service SMS such as 100 service, and SP uplink SMS is a customized SP service.

SP means a service provider, such as Tiandi Frontline, which is actually a company specializing in Monternet business.