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Configure T1 Interfaces

T1 is the basic physical layer protocol used by the Digital Signal level 1(DS-1) multiplexing method in North America. A T1 interface operates at a bit rate of 1.544 Mbps and can support 24 DS-0 channels. DS-1 standards supported include:

To configure T1-specific physical interface properties, include the t1-options statement at the [edit interfaces interface-name] hierarchy level: 

 [edit interfaces interface-name]
 t1-options { 
	 buildout (0-133 | 133-266 | 266-399 | 399-532 | 532-655);
	 byte-encoding (nx64 | nx56);
	 fcs (32 | 16);
	 framing (sf | esf);
	 idle-cycle-flag (flags | ones); 
	 invert-data;
	 line-encoding (ami | b8zs);
	 loopback (local | remote); 
	 start-end-flag (shared | filler); 
	 timeslots slot-number;
}

You can configure the following T1 interface-specific properties:

See also the following properties, which apply to a number of different interfaces:


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