Isdn bri, zephyr, and you, Northern pittsburgh tele- phone, Nynex – Telos ZephyrExpress User Manual

Isdn bri, zephyr, and you, Northern pittsburgh tele- phone, Nynex | Pacific bell, Snet (southern new england telephone), Southwestern bell, Sprint/centel, Us west | Telos ZephyrExpress User Manual | Page 177 / 186