Brokerage giant Icap is seeking to transform its London-based foreign-exchange voice brokers into active promoters of its electronic-trading platform, the latest move by a financial firm to cut humans out of direct roles in buying and selling currencies.

Icap plans to detail to customers as soon as this week a planned rollout of new technology, packaged under the name EBS eFix, aimed at enticing banks and other institutions to channel more of their currency trades to Icap's electronic EBS Market, according to officials at the firm.