Do AR routers support POS interfaces

POS interfaces that AR routers support are described as follows:

1STM1, ISTM4, and 4STM1 interface cards support POS interfaces.
Currently, AR2200, AR3200, AR3600, AR2200-S, and AR3200-S series devices support ISTM1, ISTM4, and 4STM1 interface cards. NE16EX series devices support only 1STM1 and 1STM4 interface cards.
- A 1STM1 interface card provides a POS optical interface with a rate of 155 Mbit/s.
- A 1STM4 interface card provides a POS optical interface with a rate of 622 Mbit/s.
- A 4STM1 interface card provides four POS optical interfaces with a rate of 155 Mbit/s or a POS optical interface with a rate of 622 Mbit/s (interface 0 is available and interface 1/2/3 are disabled).

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