Two chip cards from Inteltec telephone company, a 30 and a 100 units manufactured by Schlumberger, have been issued in 1992, but had a scarce diffusion and they are now not easy to get. The 30 units exists both with SC-4 and SC-6 chip modules, while the 100 units is found with SC-5 and SC-6. Some years later, other telecommunications companies started to issue their own cards.
