"It is also very difficult to reach people by phone. But we have received reports that it is possible to communicate between certain regions via fixed telephone lines," he added.
The official news agency SANA had still not resumed transmission Friday after its feed was cut on Thursday at midday. Its website was also inaccessible.
On Thursday afternoon, when communications were first cut in Syria, activists accused the regime of preparing a "massacre" while the authorities explained this interruption as "maintenance".