third-party equipment. E1 mode provides 30 channels of G.722 or G.711
encoded audio available on each of ports 1 and 5, giving 60 channels per card.
The E1 specifications are:
• HDB3 Encoding.
• Long Haul Receive Signal Level.
• E1 120 Ohm Transmit Pulse Amplitude.
• Balanced.
• 120 Ohm Line Impedance.
• No Signaling.
• G.722 or G.711 64 kbit/s Audio Encoding.
• Tx Clock locally generated.
• Rx Clock Line Recovered.
Figure 8-6: Matrix to Matrix direct E1 Trunking shows E1 trunking using a
direct connection between the matrices using a CAT5 crossover cable. The E-
QUE interface should be set to E1 Direct in EHX hardware setup.
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