E1 for business

Business E1 is the voice-call service offered to customers with the competitive tariff that can help them reduce their cost especially for calls from fixed-lines to mobiles.



It is required that customers have to have PABX with PRI-E1 (Q.931 standard) interface in order to make interconnection with True move network where GMSC is the point of interconnection.

In the delivered solution, The operator is responsible for transmission providing between customer’ s PABX and GMSC whereby its cost will be charged on operator side. Operator is responsible for PRI-E1 configuring in GMSC in order to provide the proper voice-call service as well as charging and billing for customers’ usage.

What is E1
G.703
E1 Standard

E1 Frame Structure