Features Toll-quality voice and carrier-grade feature support: The Cisco SPA8000 delivers clear, high-quality voice communication in diverse network conditions. Excellent voice quality in a demanding IP network is achieved via the advanced implementation of standard voice coding algorithms. The SPA8000 is interoperable with common telephony equipment such as voicemail, fax, private branch exchange (PBX), and interactive voice response systems. Large-scale deployment and management: The Cisco SPA8000 enables service providers to provide customized services to their subscribers. It can be remotely provisioned and supports dynamic, in-service software upgrades. A highly secure profile upload saves providers the time and expense of managing and preconfiguring or reconfiguring customer premises equipment (CPE). Ironclad security: Cisco understands that security for both end users and service providers is a fundamental requirement for a solid, carrier-grade telephony service. The Cisco SPA8000 supports highly secure, encryption-based methods for communication, provisioning, and servicing. Telephony Features Eight voice ports (RJ11) for analog phones or fax machines Impedance agnostics: eight configurable settings Call waiting, cancel call waiting, call waiting caller ID Caller ID with name and number (multinational variants) Caller ID blocking Call forwarding: no answer, busy, all Do not disturb Call transfer Three-way conference calling with local mixing Message waiting indication-visual and tone based Call return Call back on busy Call blocking with toll restriction Delayed disconnect Distinctive ringing-calling and called number Off-hook warning tone Selective/anonymous call rejection Touch-tone phone keypad configuration with interactive voice response (IVR) Fax: G.711 pass-through or real-time fax over IP via T.38 (T.38 support is dependent on fax machine and network/transport resilience)