Tele-Communication (Telecom) Terms Glossary and Dictionary
E-Link: Extended link
SS7 Extended link (E-link) connects an SSP to an alternate STP. E-links provide an alternate signaling path if an SSP's "home" STP cannot be reached via an "A" link. "E" links are not usually provisioned unless the benefit of a marginally higher degree of reliability justifies the added expense.