255-700-239
E-47
PacketStar
®
PSAX 4500 Multiservice Media Gateway User Guide
, Issue 2
Release 8.0.0
Appendix E PSAX Modules
DSP2x Voice Server Modules
Hardware Features
Any number of DSP2
x
Voice Server modules can be supported per chassis,
within the allowed System Software Release parameters:
•
The DSP2A and DSP2B modules require System Software Release 5.0.1 or
subsequent.
•
The DSP2C module requires Release 6.2.0 or subsequent.
AlgoSet6
¶
DSP2E,
channels
1–6 only
G726-voice-compression
G729a-voice-compression
G729b-silence-suppression
G168-echo-cancellation64ms
Fax-modem-tone-detection
**
V17-fax-algorithm-upto-14400-
bps
V29-fax-algorithm-upto-9600-bps
V27ter-fax-algorithm-upto-2400-
bps
V21-fax-algorithm-upto-300-bps
Standard AAL2
384
††
(21 connections
per
channel)
AlgoSet7
DSP2E,
channels
7–8 only;.
DSP2F:
channels
1–6 only
Hdlc-on-I366-1-AAL2-frame-
mode
Standard AAL2
672
(84 connections
per channel)
GR-303
Connec-
tion Moni-
toring
DSP2C/D
N/A
Standard AAL2
1152
(24 connections
per channel)
* On the DSP2C Voice Server module, the channels are configurable in any combination of voice process-
ing AlgoSets 1 through 4, but it is not recommended. Please read the cautions in Chapter 3 of the
DSP2x
Voice Server Module User Guide
when configuring large numbers of DSP connections in complex network-
ing environments with multiple trunk groups for voice, fax, and modem traffic in a PSAX chassis.
† This feature comes with full-time fax tone detection/bypass, a feature that is always turned on regardless
of the AAL mode selected. The full-time fax tone detection/bypass is automatic and cannot be turned off
by the user when echo-cancellation only mode is selected for the DSP2C (AlgoSet1), and the DSP2D
(Algoset5).
‡ This option is
not
supported in System Software Release 7.1 and subsequent releases on the DSP2D
module, but is provided by AlgoSet6.
§ The CE-to-CE connection type has been added to the 1008 channel support limit.
¶ AlgoSet6 provides all voice processing features of the DSP2C.
** You can select the type of fax tone detection and subsequent firmware action you want on the CE-to-
ATM DSP parameters connection windows. See the DSP Fax Tone Detection Modes Table in the Refer-
ence Information Appendix in this guide for the four modes available.
†† See specific AAL2 configuration considerations in Chapter 7 and 8 of the appropriate module user guide.
Table E-8. System Software Release 8.0 DSP2x
*
Voice Server Module Configuration Modes (Continued)
AlgoSet/
Module Use
Available On
These
Modules:
Voice Processing Standards
Supported
AAL Mode
Number of
Connections
Provided