Nortel Millennium Phone: Card Reader

I was able to get the card reader working using magstripelib and information on the card reader from http://www.hackcanada.com/canadian/payphones/smartrev.txt:

.-----.-------------------------.
| pin | function                |
`-----'-------------------------'
|  1  | IC CARD C7 (DATA)       |
|  2  | IC CARD C5 (GND)        |
|  3  | CARD SEATED SENSOR      |
|  4  | MAG READER VCC1         |
|  5  | IC CARD C1 (POWER)      |
|  6  | CARD PRESENT SENSOR     |
|  7  | IC CARD C6 (PROG POWER) |
|  8  | IC CARD C2 (RESET)      |
|  9  | MAG STROBE              |
| 10  | IC CARD C4 (NOT USED)   |
| 11  | MAG DATA                |
| 12  | IC CARD C8 (NOT USED)   |
| 13  | CIRCUIT GROUND          |
| 14  | IC CARD C3 (CLOCK)      |
`-----'-------------------------'

NOTE: The RED wire on the ribbon cable of your 170 is considered pin #14.