The National Communications Authority (NCA) has barred Expresso from sales and marketing promotions until operational  challenges in some of its network areas are resolved.

The ban, which followed Quality of Service (QoS) compliance findings in February this year, is expected to  be in place until the end of this month - by which time the challenges faced by Expresso should have been resolved.

The NCA's QoS findings - the first in eight months - also faulted all the other five mobile network operators  for failing to comply with some of the quality service benchmarks, which were measured in the three northern regions as well as the Eastern and Volta Regions.

However, the Authority has suspended sanctions on all the network operators for providing consumers with services below the set and agreed standards.

“NCA has notified operators on publication of these findings and suspended sanctions on defaulters pending their performance in the next monitoring in the same regions.

“Expresso has operational challenges, and has been directed to resolve them by the end of May 2014 to be in compliance with the obligations. Expresso is barred from any sales or marketing promotions within this period,” the NCA said.

The operators were measured and found liable on various counts, including defaulting on

Call congestion, Call Setup Time and Signalling congestion obligations in the Greater Accra, Western, Brong Ahafo Regions and the three northern regions.

The Quality of Service standards test is carried out by the NCA to assess the service provision standards from the consumers' perspective in an attempt to enhance services provided by the network operators.

According to the NCA, the Authority monitors and analyses the performance of mobile operators in the country every month to assess the user-experience of voice services in order to direct improvement in their Quality of Service.

The monitoring also enhances NCA's understanding of current problems faced by consumers to enable it work more closely with operators to improve customer experiences.

The Quality of Service monitoring began following incessant complaints froin consumers who have over the years expressed their dissatisfaction with the poor quality of service offered by the mobile phone network operators.

The NCA maintains the QoS assessment is based on users' perspective.

Earlier this month, findings from a survey sponsored and released by the NCA found that about two- thirds of mobile phone users in the country are satisfied with their network providers, with Glo and Expresso having the most satisfied and happiest customers.

The operators insist that quality of service will improve further if efforts are strengthened to resolve some of the challenges faced by the network providers - including poor energy supply, fibre-cuts and fuel-theft.