Since Ka-Tel controls the voicemail system for any Kaldan telephone number, all incoming voicemails will be included in the pager service. This will however mean that any voicemail received will set off the pager. All pager service providers must provide for unlimited incoming pages, and nationwide coverage. Pagers can be purchased, but the consumer will also be allowed to bring their own pager. Since the government controls all of the public pager infrastructure, then any pager sold in Kaldus will work just fine.
While some may question the validity of the pager, there are still industries where a pager is important. Those industries will need to function with the pager service, and therefore considered as an essential resource even though most people no longer relies on a pager. A pager is a supplement to the phone, not a replacement. If you have to ask if you need one, you likely do not need one.