Make sure you are aware of various ISDN issues before making ISDN calls.
To avoid long-distance telephone charges, always choose a number within your local dialing area. NB: MV makes no representation about your cost to dial any number-- it's your responsibility to investigate and verify any access charges that may apply.
| Exchange | Primary | Secondary |
|---|---|---|
| Augusta | (207) 430-0803 | (207) 430-0805 |
| Bangor | (207) 735-0803 | (207) 735-0805 |
| Belfast | (207) 930-4803 | (207) 930-4805 |
| Belgrade | (207) 495-1803 | (207) 495-1805 |
| North Berwick | (207) 676-6803 | (207) 676-6805 |
| Biddeford | (207) 571-0803 | (207) 571-0805 |
| Bridgton | (207) 647-7803 | (207) 647-7805 |
| Brunswick | (207) 373-5803 | (207) 373-5805 |
| Camden | (207) 230-3803 | (207) 230-3805 |
| Cumberland | (207) 829-7803 | (207) 829-7805 |
| Eliot | (207) 686-2803 | (207) 686-2805 |
| Fairfield | (207) 238-8803 | (207) 238-8805 |
| Freeport | (207) 869-8803 | (207) 869-8805 |
| Gardiner | (207) 588-4803 | (207) 588-4805 |
| Gorham | (207) 839-1803 | (207) 839-1805 |
| Kennebunk | (207) 467-4803 | (207) 467-4805 |
| Kennebunkport | (207) 967-7803 | (207) 967-7805 |
| Kittery | (207) 475-1803 | (207) 475-1805 |
| Lewiston | (207) 376-0803 | (207) 376-0805 |
| Old Orchard Beach | (207) 937-1803 | (207) 937-1805 |
| Portland | (207) 321-2803 | (207) 321-2805 |
| Richmond | (207) 737-1803 | (207) 737-1805 |
| Sabattus | (207) 375-1803 | (207) 375-1805 |
| Sanford | (207) 636-5803 | (207) 636-5805 |
| Scarborough | (207) 885-4803 | (207) 885-4805 |
| Skowhegan | (207) 858-7803 | (207) 858-7805 |
| Waterville | (207) 680-4803 | (207) 680-4805 |
| Wells | (207) 641-4803 | (207) 641-4805 |
| Westbrook | (207) 857-3803 | (207) 857-3805 |
| North Whitefield | (207) 549-1803 | (207) 549-1805 |
| Windham | (207) 894-6803 | (207) 894-6805 |
| Yarmouth | (207) 847-2803 | (207) 847-2805 |
| York | (207) 351-4803 | (207) 351-4805 |
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