Alvis-GW-2x2E1-R2

A dual-module 4×E1 gateway (19″ 1U): connect SIP in-line on two existing E1 streams at once, up to 120 channels — for call-centers and transit nodes.

Where it is used

• Connecting PSTN E1 streams to new IP-PBXs, call-centers, cloud and virtual systems
• Connecting existing PBXs (Panasonic TDA/TDE, LG LDK, Siemens HiPath, Avaya) to SIP operators
• Joining offices and branches into a single SIP numbering plan
• Call recording in the E1 stream and CRM / call-center integration
• Stream protection and use within the Antifraud system

Capabilities

• Up to 60 SIP↔E1 and 60 E1↔E1 connections per unit
• RtpBridge core with HDLC/PRI hardware acceleration, ≈ 5 W (ARM/DSP)
• Hardware LEC echo canceller (G.168+ / NEC, 128 ms) and timeslot cross-connect
• In-line stream operation; each port as ISDN PRI NET (network) or CPE (user)
• Codecs G.729, G.723.1, GSM-FR, AMR-NB, T.38 fax
• Hardware E1 frequency meter with daily logging, SNMP monitoring of L1/L2/L3 alarms