Tests show serious problems with key TD-SCDMA services
Shanghai. July 10.
INTERFAX-CHINA - Serious problems exist with key TD-SCDMA services, according to test results released by China Mobile's Shanghai subsidiary on July 9.
Shanghai Mobile said its parent company asked it to perform tests on 10 of 18 TD-SCDMA services. The tests showed that several feature services, including mobile TV, video conferencing, multimedia color ring back tone (CRBT) and Push to Talk over Cellular (POC) services, have serious problems.
The tests recorded an 83 percent success rate for creating video conference calls, 7 percentage points lower than China Mobile's acceptable standard. The success rate for inviting people into conference calls came to 84 percent, six percentage points lower than acceptable, while the success rate for users entering a video conference was 75 percent, 15 percentage points lower than acceptable.
In turn, video conferencing calls did not always commence when programmed on a terminal to do so at a certain time, like an alarm clock, according to the report.
The report said that POC services sometimes could not support basic communication needs due to platform instability, and communication could not be sustained for longer than five minutes.
In CRBT tests, the successful play rate came to only 84 percent, 11 percentage points lower than acceptable standards.
Specific problems with TD-SCDMA terminals also plagued the tests. New Postcom and Hisense terminals often froze during testing, and Hisense terminals could not accurately display CRBT multimedia, the report said.
In addition, New Postcom and Hisense terminals had difficulty downloading videos during mobile TV tests. Shanghai Mobile said other problems included unclear images, long buffering times and mismatches between sound and image. The report said the poor mobile TV service was mainly due to handset quality issues.
When attempting to play mobile TV, some Lenovo terminals showed a black screen, some New Postcom terminals froze and some Samsung terminals cut off the video feed after 62 seconds, the report said.
The report said similar problems have been reported in almost all China Mobile-appointed testing cities, and that such problems are the reasons behind low TD-SCDMA customer satisfaction rates.
China Mobile kicked off commercial trials of the home-grown 3G mobile telecommunication standard in eight cities on April 1.
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