Deputy Head of the General Staff Lieutenant General Khalil Arslanov 
said that the Russian military tested a new secure communication during its operations in Syria, TASS reported .
"During the military operation in Syria, we tested and used for the first time a new means of organizing secure communication with use of foreign operators' networks," he said.
The grouping's command had telephone conversations with the coalition members and the personnel could make calls to families, he explained.
During military operations, ground communications in Syria were affected, rendering them unusable, he continued.

Source: Mena