The NDOC has contracted with CenturyLink to provide calling and account billing services to inmates. Recipients of these calls may include friends, relatives, and attorneys.

CenturyLink's services incorporate The ENFORCER® inmate calling platform and related payment systems provided by Inmate Calling Solutions (ICSolutions). The ENFORCER enables each inmate to place paid telephone calls to up to 20 different phone numbers. To optimize the inmate calling experience, the ENFORCER combines security, fraud control, and regulatory compliance benefits with innovative calling plans and payment options.

Friends or family can fund calling accounts using a direct-dial "voice response" (IVR) number, a web-based portal, or by contacting Customer Support agents. Called parties can make payments directly to an inmate's calling account or take advantage of a Prepaid Collect calling plan to accommodate calls to cell phones or accounts with credit issues.

Restrictions
The following restrictions may be applied by the NDOC to inmate calling:

Limits on length of calls or calling availability hours.
Limits on number of inmate calls or total monthly call minutes.
Call monitoring, recording, and inmate voice validation (in order to place calls).
Blocks on types of phone numbers (such as 800 numbers) or selected phone numbers.
Temporary or permanent denial of phone usage rights based on disciplinary problems, gang affiliations, or requests by a called party.