PTCL launches ISDN service
KARACHI – Pakistan Telecommunication Company Ltd. (PTCL) striving its best to provide State-of-the-art telecom technologies to its customers, and for this purpose, the company introduced a new Service i.e. Integrated Service Digital Network (ISDN). ISDN BRI provides faster, clear voice and fax communication plus a new way to send and receive video images, graphics and […]