Do AR routers support the X.25 protocol

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The differences between a channelized E1 interface and an unchannelized E1 interface of an AR router are described as follows:

- An unchannelized E1 interface works as an interface not divided by timeslots, whose bandwidth is 2.048 Mbit/s.
- For a channelized E1 interface, all the 31 timeslots can be randomly divided into multiple groups (channel sets). Each group is corresponding to a separated channel whose rate can be calculated as follows: n x 64 kbit/s, in which n ranges from 1 to 31.
- For a partially channelized E1 interface, the 31 timeslots can be randomly bundled into a channel whose rate can be calculated as follows: n x 64 kbit/s, in which n ranges from 1 to 31.

Other related questions:
Indication of "25 x 22 dB"
"25 x 22 dB" indicates the transmission distance. "22 dB" indicates the length of each span, and "25" indicates 25 spans.

Which multicast protocols do Huawei AR series enterprise routers support
In versions earlier than V200R005C00, the Huawei AR Series Enterprise Routers support the following multicast protocols: -Multicast Source Discovery Protocol (MSDP) -Protocol independent multicast sparse mode (PIM-SM) -Protocol independent multicast dense mode (PIM-DM) -Internet Group Management Protocol (IGMP) -IGMP Snooping and MLD Snooping NOTE: AR150&AR200 series routers and AR1200 series routers do not support IGMP Snooping and MLD Snooping. In V200R005C00 and later versions, the Huawei AR Series Enterprise Routers support the following multicast protocols: -Multicast Source Discovery Protocol (MSDP) -Protocol independent multicast sparse mode (PIM-SM) -Protocol independent multicast sparse mode (PIM-SM) for IPv6 -Protocol independent multicast dense mode (PIM-DM) -Protocol independent multicast dense mode (PIM-DM) for IPv6 -Internet Group Management Protocol (IGMP) -Multicast Listener Discovery (MLD) -IGMP Snooping and MLD Snooping NOTE: AR120&AR150&AR160&AR200&AR500 series routers, AR510 series routers and AR1200 series routers do not support IGMP Snooping and MLD Snooping.

Which encapsulation protocols do AR series routers support
AR series routers support AAL5 logical link control (LLC)/sub-network attachment point (SNAP), and Virtual Circuit Multiplexing (VC-MUX).

Which STP protocols do AR series routers support
AR series routers support Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP).

Which multicast protocols do AR series routers support
In earlier versions of V200R005C00, Huawei AR series routers support the following multicast protocols: - MSDP - PIM-SM - PIM-DM - IGMP - IGMP snooping and MLD snooping Note: AR150&AR200 series routers and AR1200 series routers do not support IGMP snooping or MLD snooping. In V200R005C00 and later versions, Huawei AR series routers support the following multicast protocols: MSDP - PIM-SM - PIM-SM (IPv6) - PIM-DM - PIM-DM (IPv6) - IGMP - MLD - IGMP snooping and MLD snooping Note: AR150&AR200 series routers and AR1200 series routers do not support IGMP snooping or MLD snooping.

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