Symmetricom 1000 User Manual
Chapter 1 Overview of the TimeProvider
Communication Ports
Communication Ports
34
TimeProvider User’s Guide
097-58001-02 Revision G – April 2008
Communication Ports
The TimeProvider contains three communications ports that allow you to provision,
monitor, and troubleshoot the shelf. The Ethernet and Remote serial ports are
located on the shelf, and the local Craft serial port is located on the IMC. You
communicate with the TimeProvider using the TL1 protocol.
monitor, and troubleshoot the shelf. The Ethernet and Remote serial ports are
located on the shelf, and the local Craft serial port is located on the IMC. You
communicate with the TimeProvider using the TL1 protocol.
You can select one of four security levels for each user; each level has varying
levels of access to provisioning parameters. See
levels of access to provisioning parameters. See
Ethernet
An Ethernet connector provides connectivity to an Ethernet local area network.
Each main shelf has a unique internet protocol (IP) address. Once the IP address is
set and a connection is made to a LAN, you can access the TimeProvider on an
intranet.
Each main shelf has a unique internet protocol (IP) address. Once the IP address is
set and a connection is made to a LAN, you can access the TimeProvider on an
intranet.
The Ethernet port supports up to 10 simultaneous connections to port 5000.
Local Craft Serial Port
This EIA-232 port supports local control; you can configure the TimeProvider with
TL1 commands using a terminal or personal computer (PC) with terminal emulation
software or Symmetricom’s craft software, SynCraft. The connector is located on
the front panel of the IMC or IMC/TPIU card. The default specifications are
9600-8-N-1. The Local port is configured as a DCE interface.
TL1 commands using a terminal or personal computer (PC) with terminal emulation
software or Symmetricom’s craft software, SynCraft. The connector is located on
the front panel of the IMC or IMC/TPIU card. The default specifications are
9600-8-N-1. The Local port is configured as a DCE interface.
Remote Serial Port
The Remote serial connector can be used in the same manner as the local Craft
serial port. The Remote port has additional control support to manage an external
modem for remote access. The Remote port is configured as a DTE interface.
serial port. The Remote port has additional control support to manage an external
modem for remote access. The Remote port is configured as a DTE interface.
Reference Input Signals
The Input module accepts one or two E1, 2.048 MHz analog, T1, and Composite
Clock (including JCC and JCC4) inputs on ports INP1 and INP2. The CC inputs are
used solely for Subtending mode; if you provision INP1 or INP2 to a CC type, then
Subtending mode is automatically enabled. You can also connect a 2.048, 5, or 10
MHz or Japan-specific 1.544 MHz or 6.312 MHz input reference signal on the PRS
port. The TimeProvider accepts full-level signals or bridged signals (–20 dB); the
inputs are terminated per G.703. You can also connect a GPS antenna via the
TimeProvider Interface Unit (TPIU) to the GPS Input port on the shelf, or via the
integrated IMC/TPIU card.
Clock (including JCC and JCC4) inputs on ports INP1 and INP2. The CC inputs are
used solely for Subtending mode; if you provision INP1 or INP2 to a CC type, then
Subtending mode is automatically enabled. You can also connect a 2.048, 5, or 10
MHz or Japan-specific 1.544 MHz or 6.312 MHz input reference signal on the PRS
port. The TimeProvider accepts full-level signals or bridged signals (–20 dB); the
inputs are terminated per G.703. You can also connect a GPS antenna via the
TimeProvider Interface Unit (TPIU) to the GPS Input port on the shelf, or via the
integrated IMC/TPIU card.