Pagers are still widely in use in situations where mobile phone reception is unreliable or where radio transmitters cannot be used. Pagers are reliable, have a long battery life and are a good solution for quick personal or group messaging.
Paging providers offer access points to their paging network to give customers the means to send messages to their pagers. Traditionally most paging providers used access points via the TAP protocol over an analog modem connection but more and more paging providers now offer Internet access points. The access points are used by the paging software to send the messages and provide feedback if the message is accepted or rejected.

Alphanumeric Pager
Diafaan SMS Server supports the following paging protocols:
| protocol | connection | description |
| TAP | Modem | Telocator Alphanumeric Protocol (TAP, also known as IXO or PET) is an industry standard and is the main communications protocol for paging over a modem connection in the US, Canada, South America, Australia, and the majority of Europe. |
| UCP 01 | Modem and Internet | Universal Computer Protocol (UCP) is primarily used to connect to short message service centres (SMSC) for mobile phones. In Europe it is also used to send pager messages over a modem- or Internet connection. |
| SNPP | Internet | Simple Network Paging Protocol (SNPP) is a relatively simple Internet protocol that can be used to send messages to pagers and mobile phones. |
| SMTP (email) | Internet | Email is widely used to send messages to pagers and mobile phone. Since the email system is not time sensitive and it is not known if the paging provider received the message, it is not ideal for use with urgent paging or SMS messages. The SMTP service can also be used to send messages to normal email users. |
| WCTP | Internet | Wireless Communication Transfer Protocol (WCTP) facilitates sending messages to pagers and mobile phones over a plain (http) or secure (https) HTTP connection. |