AT&T 7200 series, 7500 series, 7100 series manual Communication System Networking AN Overview To AAR

			COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW					2-15
_______________________________________________________________________________________
_
			TO AAR
			RNXs
			MATCH WITH	01X IN
FROM				1ST 3 POSITIONS
	9 + (NPA) + (NNX) + EXT		10-TO-7 DIGIT
INTERNAL			CONVERSION AND
DIAL
			UNAUTHORIZED
PLAN
			CALL TABLE
			0
		YES (S75/G1)		YES (S85/G2)
			IN POSITION
			1
			?
	PARTITION		NO
	GROUP
	NUMBER		0 OR 1
	(S75/G2)			NO
			YES
			IN POSITION
			2
		FOREIGN	?
	6-DIGIT			HOME
		NPA		NPA
	TABLE
		TABLE		TABLE
			OBTAIN
		TENANT	PATTERN
		PARTITION
		(S85/G1)
				MATCH	NNX-XXXX	TRUNK TYPES
				WITH	PUBLIC NETWORK		16-28, 120
				LOCAL
			OBTAIN		OR PRIVATE NETWORK		40-49, 108,
				CALL LIST
			PREFERENCE				109, 120
			FROM	NPA - NNX - XXXX
			PATTERN
			PREFERENCE
			DATA

Figure 2-3.ARS Processing

∙Unauthorized calls. These ARS sends to intercept.

∙International exceptions. These ARS sends directly to pattern selection. This capability is especially helpful in routing international calls that require special handling. It is available on the System 85 R2V4 (Issue 2.0) and Generic 2.1 communications systems only.

During digit analysis, ARS analyzes the dialed number to determine the appropriate treatment for the call. ARS processes the call as follows, depending upon the digits it finds in the first part of the dialed number:

∙01X in first 3 positions — ARS knows that it is an international call and compares the dialed number to entries in the 10-to-7 conversion table. When it finds a matching entry, it processes the call as shown above.