MikroTik RouterOS v2.9 Reference Manual page 233

Description
Moxa c101 synchronous interface is shown under the interfaces list with the name moxa-c101-N
Property Description
name ( name ; default: moxa-c101-N ) - interface name
cisco-hdlc-keepalive-interval ( time ; default: 10s ) - keepalive period in seconds
clock-rate ( integer ; default: 64000 ) - speed of internal clock
clock-source ( external | internal | tx-from-rx | tx-internal ; default: external ) - clock source
frame-relay-dce ( yes | no ; default: no ) - operate or not in DCE mode
frame-relay-lmi-type ( ansi | ccitt ; default: ansi ) - Frame-relay Local Management Interface type:
• ansi - set LMI type to ANSI-617d (also known as Annex A)
• ccitt - set LMI type to CCITT Q933a (also known as Annex A)
ignore-dcd ( yes | no ; default: no ) - ignore or not DCD
line-protocol ( cisco-hdlc | frame-relay | sync-ppp ; default: sync-ppp ) - line protocol name
mtu ( integer ; default: 1500 ) - Maximum Transmit Unit
Notes
If you purchased the MOXA C101 Synchronous card from MikroTik, you have received a V.35
cable with it. This cable should work for all standard modems, which have V.35 connections. For
synchronous modems, which have a DB-25 connection, you should use a standard DB-25 cable.
The MikroTik driver for the MOXA C101 Synchronous adapter allows you to unplug the V.35
cable from one modem and plug it into another modem with a different clock speed, and you do not
need to restart the interface or router.
Example
[admin@MikroTik] interface> moxa-c101
[admin@MikroTik] interface moxa-c101> print
Flags: X - disabled, R - running
0 R name="moxa-c101-1" mtu=1500 line-protocol=sync-ppp clock-rate=64000
clock-source=external frame-relay-lmi-type=ansi frame-relay-dce=no
cisco-hdlc-keepalive-interval=10s ignore-dcd=no
[admin@MikroTik] interface moxa-c101>
You can monitor the status of the synchronous interface:
[admin@MikroTik] interface moxa-c101> monitor 0
dtr: yes
rts: yes
cts: no
dsr: no
dcd: no
[admin@MikroTik] interface moxa-c101>
Connect a communication device, e.g., a baseband modem, to the V.35 port and turn it on. If the
link is working properly the status of the interface is:
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