255-700-447
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PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
Chapter 3 System Features
PSAX System Software Features
This feature polls the PSAX MIB every
n
seconds and stores the information
in memory. The number of records that can be stored is initially set at 1,000.
At the end of the user-specified measurement period, the collected data is
sent via FTP to the statistics server.
Connection Gateway API
Connection Gateway
API Overview
The Connection Gateway Application Programming Interface (CGAPI) pro-
vides a communications protocol or set of messages by which a call controller
can control ATM switching on a PSAX system using nonnative ATM net-
working protocols. See the PacketStar
®
Connection Gateway Application Program-
ming Interface Developer’s Guide for detailed information about implementing a
connection gateway API.
The Connection Gateway application programming interface (API) provides a
robust interface with a goal of allowing the full line of PSAX systems to route
non-ATM traffic, smoothly interworking with nonnative ATM, ISDN, SS7,
CAS, and other protocols.
For channel-associated signaling (CAS), the Connection Gateway API offers
both R1 and R2 support. The gateway supports switched voice traffic over
ATM by improving narrowband options through AAL1 and AAL2 trunking.
The gateway provides service level interworking, provisioning, fault monitor-
ing, continuity service checking, and line testing support for the Channelized
DS3 module and/or the STS-1e T1 module. It extends continuity checks and
line tests to the I/O circuit emulation service (CES) modules. The capabilities
are particularly useful for offering voice traffic over ATM and for conveying
data.
The Connection Gateway API enhancements, Phase 6, are as follows:
•
A DSP2D interface failure indication message is sent when a call is set up
with echo cancellation enabled and the DSP2D chip used in this call has a
failure.
•
DSP2 resource messages are used to obtain interface information on DSP2
modules in the system.
•
The DSP2 call reroute feature automatically routes calls from DSP2D mod-
ules with failed chips to other configured chips on the same modules or to
any other DSP2 module in the system.
•
When the PSAX system is set up as the client in a Site Specific Configura-
tion, a Connection Gateway API interface address is used as an interface on
which to send Connection Gateway API messages.
PSAX System As a
TCP Client/Server for
the Connection
Gateway API
If you are using the Connection Gateway API with your PSAX system, you
need to configure the system as either a TCP client device or a TCP server
device. If you set up the PSAX system as a TCP client device, you can connect
multiple PSAX systems as TCP client devices to a call controller, which is set
up as a TCP server device (see Figure 3-4).
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