Connecting to telco pri trunks – Teo UC Pro Server User Manual
Page 21
Installation
13-280137 Rev. C
Page 21
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Connection to the external telephone network is typically through one or more ISDN PRI
trunks. Each PRI port can be configured to support up to 23 simultaneous calls.
Multiple cards with PRI ports may be installed; some cards may also include analog ports.
When facing the back of the server, card 1 is on the left, as shown below. Ports on each
card are numbered 1-4, with port 1 on the bottom.
Note – The connector arrangement and number of connectors per card may differ, depending on
the server configuration.
• Connect each PRI port to an ISDN PRI trunk, using standard Ethernet cables.
Note – Some installations may require a PRI swap cable or swap adapter to reverse the
transmit and receive pairs.
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Pin Number
PRI Port
Trunk
1
Transmit Tip
Receive Tip
2
Transmit Ring
Receive Ring
3
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4
Receive Tip
Transmit Tip
5
Receive Ring
Transmit Ring
6
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