HSTP High Signaling Transfer Point

Low Level Signaling Transfer Point LSTP

LSTP Low Signaling Transfer Point

Signaling Transfer Point HSTP

Signaling Transfer Point STP

Signalling transfer point

status signalsignaling transfer and end point

Destination Signalling Point Code

LSP Lower Level Signaling Point

NSP National Signaling Point

Signaling Point

Signaling Point Access-Allowed SPAC

Signaling Point Access-Prohibited SPPC

Signaling Point Code

Signaling Point Code PC

Signaling Point Restart

Signaling Point SP

signaling transfer points

Signalling Point