What is the rate of the 1E1T1-M interface of AR2220?

The rate of the E1 interface of an AR router is described as follows:

The maximum rate of an E1 interface can be calculated as follows: 32 (timeslots) x 64 (kbit/s per timeslot) = 2.048 Mbit/s
If timeslots are divided and timeslot 0 is used to transfer synchronization information:
- CE1: Except for timeslot 0, a CE1 interface includes 31 timeslots. Therefore, the maximum rate of a CE1 interface can be calculated as follows: 31 (timeslots) x 64 (kbit/s per timeslot) = 1.984 Mbit/s The maximum rate is determined by the number of timeslots that are bundled.
- PRI: Except for timeslot 0, and timeslot 16 that is used to transfer control signal, a PRI interface includes 30 timeslots that can transmit service data. Therefore the maximum rate of a PRI interface can be calculated as follows: 30 (timeslots) x 64 (kbit/s per timeslot) = 1.920 Mbit/s.

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