, , , . ,, (. 2.3.1), (Signalling Point - SP). 7 14- ( 24-), (Signaling Point Code - SPC).
(SP) , . (Originating Point) . (Destination Point) . .
(STP) (STP) (SP) . . (, ) . . , , .
. 2.3.2. SP STP
(SP), , , (Signalling Relation), , .
7 (Signalling Links - SL). SL - ( -), (. 2.3.3). ( 16) (Signaling Link Set).
, , , - .
(Signalling Modes) - , , ( ), . :
1. (Associated Mode) - (. 2.3.4).
. 2.3.3.
. 2.3.4.
2. - , , , , . .
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3. (Quasi-Associated Mode) - , (. 2.3.5).
. 2.3.5.
7 . , , , .
, , (Signalling Route). , STP ( ) . , , (Signalling Route Set) .
7 () (. 2.3.6).
, .
7 (. 2.3.7):
(INAT);
(NAT 0).
. 2.3.6. 7
. 2.3.7. 7
7 (. 2.3.8).
. 2.3.8. 7
, ( ). SP. [4].
, , (gateway). STP .
.
, .