FactBook

The information shown below was provided by representatives of the carrier shown. The International Inbound Services Forum does not warrant the accuracy of the information and assumes no liability for errors.
General
CountryKorea, Republic of 
CarrierSejong Telecom (ONSE) 
Last edited (yyy-mm-dd)2016-03-18 
Number formats
Outbound Freephone 
Domestic Freephone 
International Access Code080 xxx xxxx 
Service offerIFSUIFN
InboundIFS UIFN 
Domestic  
Home Country Direct InboundYes Yes 
Outbound  
Home Country Direct OutboundYes Yes 
CLI provided on outbound calls  
Outbound simultaneous call limit and default  
Call chargeIFSUIFN
Free or chargeableIFS UIFN 
RemarkChargable Chargable 
Number accessibility within countryIFSUIFN
Accessible from PABXsIFS UIFN 
Accessible from HotelsYes Yes 
Accessible from phones with international call barringYes Yes 
Geographic restrictionsNo No 
Islands/teritories included in dialplanNo No 
Accessible through other carriers/networks in countryYes Yes 
Full country coverage provided by a single carrierYes Yes 
Telephone include alpha charactersYes 
Access from payphonesIFSUIFN
Coins or cards needed  
Payphone
operator
To be
recognized
IFS
access
free /
charged
UIFN
access
free /
charged
HCD
access
free /
charged
Globe Telecoms  Yes      
PLDT  Yes      
Remarks on payphone access 
Access from
mobile operators
Number
ranges
IFS
access
free /
charged
UIFN
access
free /
charged
HCD
access
free /
charged
Remarks on mobile accessibility 
Number accessibility from abroadIFSUIFN
IFS numbersYes N.a.
Domestic freephonenumbersYes N.a.
DTMF Capability
Required for accessYes 
% of payphones with DTMF100 
100% by whennow 
Number PortabilityIFSUIFN
Domestic to international All UIFN's portable as required by ITU-T rec. E.169
International to domestic 
International between countries 
International between carriers 
Domestic or international between carriers within country+82 31 270 0320 
Single SOF portability supportedIFS UIFN 
Number for callers to report troubleNo No 
Directory serviceIFSUIFN
PrintedNO No 
Operator assisted  
Internet1 month 1 month 
Aging period for disconnected numbersInbound N.a.
Service provisioning leadtime1 month 1 month 
Related servicesInboundOutbound
Offers international shared costNo No 
Offers international premium rateNo  
Does agree to use transit for IFS/HCDNo  
Is willing to act as transit carrier for IFS/HCD 
Offers wholesale IFS 
Internet links
Carrier homepagewww.onse.net 
For additional information 
Regulator 
Public holiday information