Technology group Eckoh swung to an annual pre-tax profit thanks to a sharp rise in revenue.In the year to the end of March, the London-listed group posted a pre-tax profit of £2.1m compared with a £1.4m loss a year earlier, as revenue jumped 22% to £17.2m.The company said it had secured a record number of new clients in the UK and won five new US customers, as it continued to expand its business across the Pond, adding it hiked its dividend to 0.37p per share, an 18% increase year-on-year.Meanwhile, the group has submitted a cash-and-shares offer for software company Netcall, consisting of 1.25 Eckoh shares plus 13p in cash for each Netcall shares, giving them a value of approximately 63.94p per each share.In a separate statement, Eckoh said it had secured a five-year deal with FTSE 100-listed outsourcer Capita's customer management division to provide telephony services to a leading, unnamed UK transport organisation.Eckoh shares were down 1.79% to 40.02p at 09:47 on Thursday.