# 2 T1 Information

Overview

This chapter contains information on T1 configuration. This information applies to the T-ONE card only (not the ST1LC card).

The T-ONE card supports 16 T1 spans. If you do not need all 16 spans, you can buy the card with fewer spans. When your needs increase, you can buy product licenses to enable more spans, two at a time.

For PPL Component Addressing information regarding T1, refer to PPL Component Addressing Information in the API Reference.

Refer to Configuring SS7 Virtual Spans in the Developer’s Guide: Common Channel Signaling for information on virtual T1 cards.

Important! PPL timer and configuration bytes are stored on a per channel basis for T1 configuration.
The PPL Transmit Signal Configure message (0xD2) is applicable to the T1 Layer 3 PPL.

Important! If the T-ONE card is not responding during frame synchronization, you must take it out of service and bring it back into service.

In this section:

Default Instruction Lists

T1 Component (0x0003)

T1 Signaling

T1 Call Setup

T1 Call Flows

Digital communications link - voice, data, and video at a 1.544 Mbps rate (24 64 Kbps channels)
See Programmable Protocol Language.
A programmable software component that uses PPL state machines that can be modified with the PPL Tool.
See Signaling System Number Seven.
CCS. Network architecture using SS7 protocol for the exchange of information between telecommunications nodes and networks on an out-of-band basis.
Protocol layer of the CSP.