A - Link

Explanation of SS7 A - Link

SS7 (Signaling System No. 7) is a set of telephony signaling protocols used to set up and tear down telephone calls, route SMS messages, and perform other telephony-related functions.

The 'A-Link' in SS7 architecture specifically refers to the Access Link which connects a Signaling Point (SP) to a Signaling Transfer Point (STP).

An 'A-Link' is typically characterized by:

• High availability and reliability.

• Redundancy to prevent single points of failure.

• Use in both national and international signaling.

A typical SS7 network configuration ensures that the A-Link is robust to support critical communication signaling tasks.