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TimeProvider 2300/2700 User’s Guide
098-00564-000 Revision A3 – July, 2013
Chapter 4 Provisioning
Provisioning the Non-PTP Outputs
Provisioning the 10MHz & 1PPS Output
Use the following procedures to provision the 10M/1PPS port as a 1PPS output or
10 MHz output.
1PPS Output Example
To configure the 1PPS/10M port as a 1PPS output, with an offset of +50,000 ns, and
to enable the port, use the following procedure:
1. Login at the Admin or Config-user level.
2. Type
set port-control pps10m signal-type pps
and press
Enter
.
3. Type
set output pps offset pps10m 50000
and press
Enter
.
4. Type
set port-control pps10m state enable
and press
Enter
.
10 MHz Port Example
To configure the 1PPS/10M port as a 10MHz output and to enable the port, use the
following procedure:
1. Login at the Admin or Config-user level.
2. Type
set port-control pps10m signal-type 10m
and press
Enter
.
3. Type
set port-control pps10m state enable
and press
Enter
.
Provisioning SyncE Output
SyncE provides a method of distributing timing using the physical layer of Ethernet
devices. All intermediate nodes must have hardware and software support for
SyncE. SyncE is used to distribute frequency through the network. SSM is passed
between nodes in ESMC messages. This allows nodes to determine the quality
level of the upstream node, to prevent timing loops, and also to reconfigure the
timing path. The TP 2300/2700 provides the master function of providing
synchronization via SyncE.
Ethernet can be run in either asynchronous or synchronous modes. Electrical SFP
do not support the transmission of timing and therefore are asynchronous. Optical
SFP support synchronous operation and therefore can be used with SyncE.
Normally, SyncE nodes use the ESMC messages. However, if the downstream
devices do not use the ESMC messages, then the messages can be disabled.
The system PQL value is normally sent in the QL -value (SSM) field in the ESMC
message. If desired, this can be disabled and a value of DNU will be inserted in the
ESMC message.