originating line-side access
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- The ability to dial the appropriate 7- or 10-digit test number from a subscriber line. [T1.207-2000]
ATIS - Cite This Source - This Definition - abbreviated dialing, class of service, dial back, dial through, dial-up, dialed digits, direct dialing service, direct distance dialing (DDD), direct inward dialing (DID), network inward dialing (NID), second dialtone, UPT access number (UPTAN)