Symmetricom 1100 Communication Ports, Reference Input Signals, Ethernet, Local Craft Serial Port

Chapter 1 Overview of the TimeProvider

Communication Ports

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.

You can select one of four security levels for each user; each level has varying levels of access to provisioning parameters. See Defining the Security Parameters, on page 94.

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.

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.

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.

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.

34 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008