Thread: CDMA F-20 Fixed wireless phone

i want to know how to configuration the CDMA F-20 Fixed wireless phone.it using in pakistan by DIALLOG company.some time it left to work from its own built in phone no.when we insert another UIM in this it began to work with outer sim.i want to learn how to config or unlock its built in phone no because it has one no in it.and we can insert another UIM in its outer UIM jacket.