T1 Trunking

The E-QUE interface card can provide T1 trunking between Eclipse systems and between Eclipse systems and compatible third-party equipment.

T1 mode provides 24 channels of G.722 or G.711 encoded audio on each of ports 1 and 5, giving 48 channels per card.

The T1 trunking specifications are:

• B8ZS Encoding.

• Extended Super Frame.

• Long Haul Receive Signal Level.

• T1 Long Haul (LBO 0 dB) 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.

T1 trunking between matrices can also be achieved over an E1 network as shown in the following diagram.

In this case T1 ports 1 and 5 of the E-QUE rear card are connected using standard straight-through CAT5 cables rather than crossover CAT5 cables.