BilltoMobile is expanding its direct carrier billing relationship with Verizon Wireless to process transactions from other payment platforms starting with mobile payment start-up Boku. The agreement allows Boku to tap into BilltoMobile’s direct billing gateway and will greatly expand the number of merchants and consumers who can use direct billing on Verizon. BilltoMobile’s deal with Boku is non-exclusive so BilltoMobile could also process transactions from Zong and other payments providers as well.

BilltoMobile last year secured the first U.S. carrier billing deal when it agreed with Verizon Wireless to process payments directly through the carrier’s billing system.

via GigaOm.