Globe Telecoms features Globe DUO US, which allows unlimited calls from the US to the Philippines at $10 for 30 days. Actually, that was originally at $25, though Globe offered a 60% off until May 11, 2014.
Globe DUO US makes it easier for your friends and relatives from the US to contact you here locally via your Globe or TM number, which actually has a registered alternate Globe DUO US number. For registration, simply apply online for only $10 USD for a month promo.
Philippine local Globe and TM subscribers can also get the Globe DUO US number via SMS, just by texting either DUO US 999 to 8888 to register on a monthly subscription. Or you can also just dial *143#, select 6 International & Roaming, then 1 International Call and Text Promos, and then choose 6 DUO US.
This $10 promo rate actually stands for Globe DUO International, which includes subscriptions for Globe DUO Canada, Globe DUO UK, and Globe DUO Korea that is also offered till May 11, 2014.