Overview - Tekelec IP7 Secure Gateway Administration Manual

Database Administration Manual - IP7 Secure
Gateway

Overview

End Office Support enables the EAGLE 5 ISS to share its true point code (TPC) with an IP-based node
without the need for a separate point code for the IP node. When the End Office Support feature is in
use, the EAGLE 5 ISS shares a point code for up to three network types with attached IP network
elements.
The EAGLE 5 ISS lets you take advantage of next generation network technology by migrating existing
signaling end points from the PSTN to the IP network. The fact that the EAGLE 5 ISS is a signaling
transfer point and has its own point code, however, can present a significant network management
issue. This feature provides the means to perform the migration without obtaining a new point code
or reconfiguring the network to interface with both the EAGLE 5 ISS and an IP end office node.
Characteristics of this feature include:
The EAGLE 5 ISS allows a set of IP network elements to share its true point code.
The EAGLE 5 ISS allows messages destined to its true point code and having SI>=3 to be forwarded
to an IP network element.
The EAGLE 5 ISS enables IP networks elements sharing its true point code to participate in network
management.
The EAGLE 5 ISS supports ANSI, ITU national and international end office nodes.
The EAGLE 5 ISS implements the MTP procedures required for an end office node.
The End Office Support feature does not reduce the rated TPS of any EAGLE 5 ISS application.
The Remote Application Table contains fields for assigning each user part to an end office node. The
default value is 'not assigned'.
New Remote Application Table commands provide for adding, deleting, and retrieving user-part
assignments:
ent-rmt-appl
dlt-rmt-appl
rtrv-rmt-appl
The user parts SI=0, SI=1, and SI=2 cannot be assigned to an end office node. The SNM case is a special
case in that UPUs may be forwarded, even though SI=0 cannot be assigned to a remote application.
All other SNMs are processed as destined to the EAGLE 5 ISS rather than the end office node. This
often results in a multicast throughout the EAGLE 5 ISS that updates the routing tables on all cards.
An end office node can receive these messages via replication performed by MTPP.
Each SS7-based application that receives a message destined to a TSPC checks the user-part assignment
within the Remote Application Table. If the user-part is assigned and the SI is greater than or equal
to 3, then the message is forwarded to the appropriate application, otherwise it is processed as though
destined to the EAGLE 5 ISS.
To assign a remote application for the SCCP (SI=3) user part, you must also specify a subsystem
number. The Remote Application Table maintains a record of assignments for all possible subsystems
(256). Subsystems are either assigned or not assigned.
Note: SSN=0 is normally an invalid value. This feature makes use of SSN=0 for the purpose of
forwarding certain MSUs to the end office node.
910-6278-001 Revision A, January 2012
End Office Support
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