Broadband Phone Adapter
Appendix E: Specifications
USER GUIDE
Voice Gateway
SIPv2: Session Initiation Protocol v2 (RFC 3261, 3262, 3263, 3264)
SIP Proxy Redundancy - Dynamic via DNS SRV, A Records
Re-registration with Primary SIP Proxy Server
SIP Support in Network Address Translation Networks - NAT (incl. STUN)
Secure (Encrypted) Calling via Pre-Standard Implementation of Secure RTP
Codec Name Assignment
Voice Algorithms
G.711 (A-law and µ-law)
G.729 A
Dynamic Payload
Adjustable Audio Frames per Packet
Physical Interfaces
2 100baseT RJ-45 Ethernet Port (IEEE 802.3) -- 1 WAN, 1 LAN
2 RJ-11 FXS Phone Ports - For Analog Circuit Telephone Device (Tip/Ring)
Subscriber Line Interface
Circuit (SLIC)
Ring Voltage: 40-55 VRMS Configurable
Ring Frequency: 10 Hz - 40 Hz
Ring Waveform: Trapezoidal and Sinusoidal
Maximum Ringer Load: 3 REN
On-hook/off-hook Characteristics:
On-hook voltage (tip/ring): -50 V NOMINAL
Off-hook current: 25 mA min
Terminating Impedance: 8 Configurable Settings including
North America 600 ohms, European CTR21
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Summary of Contents for Broadband Phone Adapter
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