H3C SR6600 Configuration Manual page 22

Step
3. (Optional.) Configure the
interface description.
4. Set the link layer protocol.
5. Set the digital signal coding
format.
6. Set the baud rate.
7. Set the clock selection mode
for the synchronous serial
interface.
8. (Optional.) Set transmit-clock
or receive-clock signal
inversion on the DTE side.
9. Set the MTU.
10. Set the CRC mode.
11. Set the number of interframe
filling tags.
12. (Optional.) Enable level
detection.
13. (Optional.) Enable data
carrier detection (DCD).
14. (Optional.) Enable local
loopback.
15. Set the keepalive interval.
16. Set the maximum number of
keepalive attempts.
17. Set the line idle-code.
18. (Optional.) Enable RTS
signal reverse.
19. (Optional.) Set the intended
bandwidth for the
synchronous serial interface.
Command
description text
link-protocol { fr | hdlc | ppp |
mfr }
code { nrz | nrzi }
•
Set the baud rate on the
DCE side:
baudrate baudrate
•
Set the baud rate on the
DTE side:
virtualbaudrate
virtualbaudrate
clock { dteclk1 | dteclk2 |
dteclk3 | dteclk4 | dteclk5 |
dteclkauto }
invert { transmit-clock |
receive-clock }
mtu size
crc { 16 | 32 | none }
itf number number
detect dsr-dtr
detect dcd
loopback
timer-hold seconds
timer-hold retry retries
idle-code { 7e | ff }
reverse-rts
bandwidth bandwidth-value
15
Remarks
By default, the description of a
synchronous serial interface is
interface name Interface, for
example, Serial2/1/0 Interface.
The default is PPP.
The default is non-return-to-zero
(NRZ).
The default is 64000 bps.
By default, the DTE-side clock is
dteclk1.
The dteclk5 keyword is not
supported in the current software
version.
By default, clock signal inversion
is disabled.
The default is 1500 bytes.
The default is 16-bit CRC.
The default is four.
By default, level detection is
enabled.
By default, DCD is enabled.
By default, local loopback is
disabled.
The default setting is 10 seconds.
The default setting is 5.
The interface determines that the
remote end is down if it does not
receive a keepalive response
after the maximum number of
keepalive attempts have been
made.
The default is 0x7E.
By default, RTS signal reverse is
disabled.
By default, the expected
bandwidth (in kbps) is the
interface baud rate divided by
1000.