Instruction manual

Page 1259 of 3156
Features and Services
Digital Private Network Signaling System
British Telecom’s Digital Private Signaling System No. 1 (DPNSS1) is the
open signaling protocol standard for intelligent private network digital
connections. DPNSS1 provides the signaling capability to establish simple
telephony and data calls, as well as supplementary features.
The following DPNSS1 features have been introduced:
• DASS2/DPNSS1 – Integrated Digital Access
• DPNSS1 Attendant Call Offer
• DPNSS1 Attendant Timed Reminder Recall and Attendant Three-party
Service
• DPNSS1 Call Back when Free and Next Used
• DPNSS1 D-channel Handler Interface Expansion
• DPNSS1/DASS2 to ISDN PRI Gateway
• DPNSS1 Extension Three-party Service
• DPNSS1 Loop Avoidance
• DPNSS1 Redirection
• D-Channel Interface Expansion for DASS2/DPNSS1
• DPNSS1 Route Optimization
• DPNSS1 Step Back on Congestion
• DPNSS1 Executive Intrusion , and
• DPNSS1/DASS2 Uniform Dialing Plan Interworking.