Dialogic SS7G21 Power Supplies, Server Board, Hard Disk Drive, CD-ROM Drive, SS7 Signaling Boards

Chapter 2 Introduction

A list of product variants to which this manual applies can be found in Section 2.11, “Applicability” on page 14.

2.3Power Supplies

An SS7G21 or SS7G22 product can be ordered with one of the following:

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AC-input Power Supply Cage (SS7G21A, SS7G22A) DC-input Power Supply Cage (SS7G21D, SS7G22D)

The Power Supply Cage, which is mounted towards the left rear of the chassis, contains the Power Supply Modules. Both the AC and DC-input Power Supply Cage may contain up to two Power Supply Modules and can be configured as follows:

•One Power Supply Module installed (this is the factory standard setting). Units configured in this manner can supply a fully loaded product, but do not provide dual redundancy. The second position contains a filler module.

•Two Power Supply Modules installed. Units configured in this manner are dual redundant. In the event of a failure of any one Power Supply Module, the operation of the product is unaffected.

When the product is configured with two Power Supply Modules, the hot-swap feature allows the user to replace a failed module without interrupting system functionality.

Caution: The Power Supply Modules used in the AC-input Power Supply Cage can not be used in the DC- input Power Supply Cage. Similarly, the Power Supply Modules used in the DC-input Power Supply Cage can not be used in the AC-input Power Supply Cage. The correct product variant must be specified at time of ordering, see Chapter 12, “Part Number Reference”.

2.4Server Board

The chassis incorporates a Server Board incorporating dual Intel Xeon processors with 512 KB L2 cache and 1 GB DRAM DIMM memory. The Server Board has a Riser Board, which supports the fitting of up to three full-length PCI SS7 Signaling Boards. See Section 2.7, “SS7 Signaling Boards” on page 12 for more information on the types of SS7 Signaling Boards that are installed.

2.5Hard Disk Drive

As standard, a Hard Disk Drive (HDD) is installed in a drive bay in the front of the chassis, accessible by removing the front bezel of the product. A spare assembly is available for the HDD, see Chapter 12, “Part Number Reference”.

2.6CD-ROM Drive

A CD-ROM drive is accessible at the front panel, and may be used for loading software updates.

2.7SS7 Signaling Boards

The SS7G21 and SS7G22 use intelligent multi-port interface boards with one or more on-board signaling processors for the processing of SS7 signaling links. The SS7 Signaling Boards are full-size PCI form factor boards that occupy one, two, or three board positions in a Riser Board mounted on the Server Board. The SS7 Signaling Boards each provide four (or two) primary rate telecommunications (PCM) interfaces, each being individually configured at run-time under software control to operate as a T1 or E1 interface with selectable line code and frame format. For SS7 Signaling Boards with two PCM interfaces, there are also two synchronous V.11 (V.35 compatible) serial interfaces, on a shared connector. See Section 6.5, “SS7 Serial Interface Ports” on page 36 and Appendix A for more information.

The number of SS7 signaling links that can be terminated by an SS7 Signaling Board depends on the board type as described below. Signaling links may be presented either as a timeslot on an external PCM interface, or as a synchronous V.11 serial interface when provided by the board. Signaling links can operate at 64kb/s, 56kb/s or 48kb/s. The SS7 Signaling Boards also support configurable clock recovery priorities with automatic switching to a new clock source on failure, and automatic restoration on recovery of the failed clock source.

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