Opex Residential Long Distance Carriers Opex 1-Plus Interstate Rate 4.5 cents/min Opex 1-Plus Intra-State Rate click here Opex Monthly Fee none* Opex Inbound Toll-Free Rate 4.5 cents/min Opex Inbound Toll-Free Service $2/month** Opex International Rates click here Opex Billing Increments 1 minute Opex Minimum Call Length 1 minute Opex Applicable Fees $2 if your bill is under $20. Opex Business Long Distance Carriers Opex 1-Plus Interstate Rate 4.5 cents/min Opex 1-Plus Intra-State Rate click here Opex Monthly Fee none* Opex Inbound Toll-Free Rate 4.5 cents/min Opex Inbound Toll-Free Service $2/month** Opex International Rates click here Opex Billing Increments 6 seconds Opex Minimum Call Length 18 seconds Opex Applicable Fees $5 if your bill is under $50. *A **$2/month for the first inbound toll free line, and 53 cents for each additional inbound line Opex Long Distance Phone Services & Carriers Billing Plans: OPEX eBill is a secured electronic invoice. OPEX will provide users a convenient monthly email notification to initiate access to the current month’s invoice. Cost: FREE OPEX Paper-Bill is a regular hard-copy monthly invoice send via US Mail. Cost: FREE OPEX Combo-Bill is a combination of both eBill and Paper Bill.  OPEX will send you an electronic notification of your bill as well as hard copy invoice send via US Mail.  Cost: $1.99 Opex Long Distance Phone Services & Carriers Payment Methods: Receive an 8% discount by prepaying for your OPEX service! The minimum prepay amount is just $20 for residential customers and $50 for business customers. There is a 99 cent charge every time you have to recharge your account. OPEX will charge the pre-pay increment to your credit card or checking account upon signing up with OPEX's Service. All additional charges to your credit card or checking account will be on a recurring basis when your OPEX Service has used up 90% of your pre-pay increment. You may change your pre-pay increment at any time. Pay your OPEX bill with Auto-Pay, which will automatically deduct your monthly balance due from either your checking account or any major credit card. Pay your bill yourself, via check sent through US Mail, every month. To switch your long distance to OPEX, simply click here to find out what our rates are in your area and to begin the order process. Your information is only used *strictly* for the sole intention of setting up your long distance account. Your information will never be sold or given to any third party. To apply for service, use the links below to direct you to our online or printable offline application forms: