ZXSS10 SS1b, the core device in Softswitch architecture, implements such functions of call control, media gateway access, routing, authentication, protocol processing, accounting, etc., independent of bottom bearer protocol.
Cooperating with an application server of SCP at the service layer, the ZXSS10 SS1b not only provides PSTN basic and supplementary services, but also provides multimedia, traditional IN, individual IP-based and value-added services.
Features
Interoperable capability
Flexible scalability
Extensive service capability
Perfect access capability with integrated devices
Massive networking capability
Manageability and operability
High reliability
Applications
Backbone data network for toll services
Enterprise network for VoIP services
Internet for IP value-added services
Metropolitan network for local services
Multimedia services
Integrated IN services
PSTN and IN interoperation services
Functions
Processes basic and enhanced calls
Protocol Adaptation
Provides service platforms with an open and standard interface - supports future expansion
Interconnects and interoperates with peers
Supports accounting, authentication, maintenance, etc.
Address resolution: Converts E.164 address to IP addresses
Controls whether media gateway shall adopt voice compression and provides optional algorithms as necessary
Provides strong dual-homing mechanism
Centrally managed system resources such as resource allocation, release and control
Protocol Capability
Call control protocols: ISUP, TUP over IP, SIP, SIP-T, SIP-I, H.323, BICC, V5.2, R2, PRA
Transport control protocols: TCP, UDP, SCTP, TCAP/SCCP, M3UA, M2UA, M2PA, IUA, V5UA
Media control protocols: H.248/MEGACO, SIP, MGCP, NCS
Service application protocols: INAP(CS2), LDAP, RADIUS, MAP
Maintenance management protocols: SNMP, FTP, Telnet
Performance Capability
System Capacity:
Subscribers: 16,000,000 (max.)
Trunks: 1,600,000 (max.)
Signaling gateway numbers: 1000 (max.)
Max number of signaling point: 1024
Max number of signaling link: 1500 64k or 100 2M
Media gateway numbers: 2 million
Black/While list: 5 million
Accuracy of billing: ≥ 99.9999%
Cascading frames: 8 (max.)
Processing Capability:
Single frame: BHCA: not less than 2M for subscribers (max.)
Single system: BHCA: not less than 16M for subscribers (max.)
Reliability:
Recovery time: less than 5 minutes (max.)
Annual failure time: 5.3 minutes (total)
Services
Voice services: 100% with PSTN/ISDN basic and supplementary services
Softswitch services: Wide area IP Centrex, Broadband IP phone bar services, etc.
Integrated voice / data services: Click-to-dial, Web 800, Web conference, ONLY, prepaid, etc.
Multimedia: Videophone, Video conference, SoftDA , etc.
Cooperated with application server: Unified information, Prepaid, Voice-mail, etc.
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