LERG Routing Guide

<h2 id="content-and-purpose">Content and purpose</h2>
<p>The LERG provides data to support the routing of <a href="/facts/Telephone/P7uEgWQX">telephone</a> calls by service providers in the <a href="/facts/Public_switched_telephone_network/eVrCTDU7">public switched telephone network</a> (PSTN) and the interconnection points of the PSTN with <a href="/facts/Internet_Protocol/Qq6VeEal">Internet Protocol</a> (IP) networks. 
</p>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Routing_in_the_PSTN/uYjzHMy6">Routing in the PSTN</a></li></ul>
<h2 id="external-links">External links</h2>
<ul><li><a href="https://iconectiv.com/truops/telecom-routing-administration">"TruOps Telecom Routing Administration (TRA) Overview"</a>.</li>
<li><a href="http://www.trainfo.com/products_services/tra/catalog_details.html#LERG">Telecom Routing Administration (part of iconectiv) LERG</a></li>
<li><a href="http://www.trainfo.com/products_services/tra/downloads/lerginfo.pdf">TruOps Telecom Routing Administration (TRA) LERG™ Routing Guide General Information</a></li></ul>

LERG Routing Guide open-in-new

LERG Routing Guide