T1 is the basic physical layer protocol used by the Digital Signal level 1(DS1) multiplexing method in North America. A T1 interface operates at a bit rate of 1.544 Mbps and can support 24 DS0 channels. Supported DS1 standards 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 {
-
bert-algorithm algorithm;
-
bert-error-rate rate;
-
bert-period seconds;
-
buildout value;
-
byte-encoding (nx56 | nx64);
-
fcs (16 | 32);
-
framing (esf | sf);
-
idle-cycle-flag (flags | ones);
-
invert-data;
-
line-encoding (ami | b8zs);
-
loopback (local | payload | remote);
-
remote-loopback-respond;
-
start-end-flag (filler | shared);
-
timeslots time-slot-range;
- }
You can configure the following T1 interface-specific properties: