T1 Trunking

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

T1 mode provides 24 channels of G.722 encoded audio are available 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 64 kbit/s Audio Encoding.

  • Tx Clock locally generated.

  • Rx Clock Line Recovered.

T1-Trunk.jpg

T1 trunking between matrices can also be achieved over a E1 network as shown in the image below.

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.

T1-Network.jpg

E1/T1 trunking failover

Where the E1/T1 trunking has been configured with redundant trunks audio will be switched from the primary trunk to the backup trunk when a failure is detected.

When failover occurs from primary to backup there will be a three second audio break on any route running over the trunk.

If the trunk routing is later switched back from the backup trunk to the primary trunk there will be no loss of audio.