In an effort to replace all of the existing equipment with an private branch exchange(PBX), the existing telephone at GIST will be replaced with internet phone as we informed before.

  Either existing or new phone has been used during the testing period but these parallel services can’t available from April 25^th (Fri) 17:00.

  A point of April 25^th(Fri), the existing equipment will be discontinued and replaced with PBX.  According to the operations’ schedule, neither calling nor fax service will be available during the operations.  Please keep in mind the available time as follows.

[ It won’t be available to use existing telephone from 25^th(Fri.) 17:00

  - 4. 25(Fri) 17:00 ~  : Unavailable to use existing phone/FAX

  - 4. 25(Fri) 18:00 ~  : Available to use internet phone(both receiving and calling)

  - 4. 26(Sat) 12:00 ~ :  Available to use fax or analog telephone will partially available.

  - 4. 28(Mon) 09:00 ~: Normal service

  Although the normal service will resume from on 28^th, some unexpected things possibly come up. Please inform us of any inconveniences if you have so that we can quickly handle it.
Sorry for any inconveniences.

Remarks : The existing phone will be recalled when it comes to settle down the new system.

Thank you for your cooperation.