The OptiSwitch® E1/T1 module features a carrier class architecture that enables TDM line emulation over Ethernet/IP networks: a normal voice E1/T1 line is translated into IP frames, sent to a specific destination IP address and reconstructed on the other side to a normal E1/T1 line.
This solution enables the extension of E1/T1 links over Ethernet/IP networks maintaining toll quality voice over the Ethernet QoS medium and offer smooth convergence of voice and data infrastructure.

Features
Supports framed E1/T1 links: all popular E1 and T1 framing standards (PRI, CAS, SS7, etc.).
Supports echo-cancellation .
Supports silence compression : Voice-Activity-Detection (VAD) and Comfort-Noise-Generation (CNG). This feature may save more then 70% of network bandwidth resources (in comparison with existing E1/T1-over-IP solutions).
Supports jitter-buffering to prevent IP network forwarding delay variations from influencing the E1/T1 voice traffic. Up to 150 mSec buffer is supported for each voice-channel.
Supports Network or Local TDM timing synchronization .
Supports transport of any voice signaling on the signaling channels: the signaling channel is sent transparently to the other end, making the emulation transparent to any signaling protocol (CAS, as well as all forms of CCS).
Supports per voice-channel resolution for trans-port of specific voice-channels from a full E1/T1 CAS line to different destinations.
Supports loop backs on the E1/T1 trunk level and the voice-channel level, from both the E1/T1 link side and the Ethernet side.

Drawings