RTX Provides Cordless Phones for Net-Based Calls  COPENHAGEN (Reuters) - Danish electronics equipment maker  RTX Telecom &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=RTX.CO qtype=sym infotype=info qcat=news"&gt;RTX.CO&lt;/A&gt; said on Monday it had signed an agreement  with Skype, a provider of Internet-based voice telephony, to  develop and market cordless handsets.