The company through its Facebook page issued a statement explaining the real cause of the problem.
Here’s what the telco has to say:
ADVISORY: Globe Telecom advises all Globe and TM subscribers that they may encounter some difficulty making and receiving voice calls as well as sending and receiving text messages from subscribers of Sun Cellular.
Initial investigation shows a glitch in the interconnection facility of the Cellular Mobile Telephone System (CMTS) of Digitel Mobile Philippines (Sun Cellular). Network engineers from both Globe and Sun are working to restore the Sun-Globe interconnect to its normal level.
As an interim measure, Globe has re-routed voice call traffic with Sun Cellular to an alternate facility to help connect calls to and from Sun Cellular subscribers.
We ask for your patience as we work with Sun Cellular to expedite full service restoration.