AI2524 Router Card User’s Manual

To guarantee the ones density requirement on an AMI line using th

FT1/T1 CSU/DSU module, type this in interface configuration mode:

service-module t1 data-coding inverted

This command inverts bit codes by changi ng all 1 bits to 0bits and all 0 bits to 1 bits.

If the timeslot speed is se t to 56kbps, this command is rejected be- cause line density is guaranteed when transmitti ng at 56kbps. Use this command with the 64 kbps line speed. If you transmit inverted bit codes, both CSU/DSUs must have this command configured for suc- cessful communication.

To enable normal data transmission on a FT1/T1 network, type this in interface configuration mode:

service-module tx1 data-coding normal

or

no service-module t1 data-coding inverted

Specify the Frame Type of a FT/T1 Line

To specify the frame type for a line using the FT1/T1 CSU/DSU mod- ule, type this in interface configuration mode:

service-module t1 framing {sf esf}

Note:

Choose either D4 Super Frame (sf) or Extended Super

 

Frame (esf).

In most cases, the service provider determines which framing type, ei- ther esf or sf, is required for your circuit.

Specify the CSU Line Build Out

To decrease the outgoing signal strength to an optimum value for the telecommunication carrier network, type this in interface configura- tion mode:

service-module t1 lbo {-15 db -7.5 db}

This command decreases the outgoing signal strength in decibels.

Page 14-2

August 1997

 

2524UM

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AIS AI2524 user manual Specify the Frame Type of a FT/T1 Line, Specify the CSU Line Build Out, Frame esf