255-700-447
2-17
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
Chapter 2 Hardware Description
Hardware Specifications
23N28
Tones and
Announcements
Server
1 MB
(SRAM)
512 KB
(SRAM)
N/A
N/A
Low
Speed
17 W
Alarm Module
20N79
Alarm
N/A
N/A
N/A
N/A
N/A
3 W
Stratum 3–4 Module
PSAX 2300 Stratum
3–4
N/A
N/A
N/A
N/A
N/A
6 W
CPU Modules
20N20
CPU2
128 MB
N/A
N/A
N/A
N/A
18 W
23N20
CPU4
512 MB
N/A
N/A
N/A
N/A
15 W
*
On all PSAX I/O modules, except the 4-Port Voice 2-Wire Office and the 8-Port Voice 2-Wire Station mod-
ules, the I/O buffers carry 16,384 cells per megabyte. The PSAX server modules carry no cells on the I/O
buffers. Any module with 24 MB SDRAM can buffer only 16,384 packets, or approximately 682 packets
per megabyte. Traffic on the 4-Port Ethernet module is buffered packet by packet, not cell by cell.
†
Indicates the size of the output buffer followed by the maximum number of 64-byte cells in the output
buffer.
‡
This column relates only to the speed at which the module communicates within the chassis. A high-speed
module will communicate at high speed (1.2 Gbps) in a chassis that has a high-speed bus (PSAX 4500
chassis). High-speed modules will communicate at 600 Mbps in any other chassis. Low-speed modules will
always communicate at 600 Mbps in any chassis.
§
The total SDRAM for this module includes 2 MB of SRAM.
¶
The value 24 MB refers to the maximum data buffer (input and output buffers combined).
**
The SDRAM listed only takes into account the memory associated with the upper layer processor. It does
not take into account the fastpath processor (firmware) or the hardware reassembly buffers.
Table 2-9. Performance and Power Specifications for the PSAX Modules (Continued)
Module
Total
Amount of
SDRAM
Module
Program and
Data Space
Maximum
Input
Buffer
*
Output
Buffer
†
Chassis
Speed
‡
Maximum
Power
Consumption
