UM380 03 010
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Introduction
1 Introduction
1.1 InterChange iQ 2000
InterChange iQ 2000 is a dual port ISDN unit designed to perform signalling and service
reconciliation between two unlike ISDN signalling systems.
It is typically deployed to attach:
• a QSIG (or DPNSS) PBX to a DPNSS (or QSIG) network, or
• a number of DPNSS PBXs to a QSIG or Q.931 backbone (e.g. VoIP or ATM)
network, or
• a DPNSS PBX to a Q.931-based Public ISDN service (such as ‘ISDN 30e’).
When attaching a QSIG (or DPNSS) PBX to a DPNSS (or QSIG) network,
InterChange iQ 2000 provides seamless service interworking between the attached PBX and
other PBXs in the network, including inter-operation of most of the commonly used services.
InterChange iQ 2000 facilitates basic call interworking, including simple services such as
calling and connected identity when attaching a number of DPNSS PBXs to a QSIG or Q.931
backbone network, or a DPNSS PBX to a Q.931-based Public ISDN service.
In addition, when attaching a number of DPNSS PBXs to a QSIG or Q.931 backbone
network and the core network supports QSIG signalling, InterChange iQ 2000 can transport
DPNSS signalling across the network and deliver it practically transparently via a similar
InterChange unit to a remote DPNSS PBX. In this mode all DPNSS Supplementary Services
are supported apart from some link-specific Traffic Channel maintenance services.
InterChange iQ 2000 supports 2 E1 Primary Rate [2 Mbit/s (30B + D) Common Channel
Signalling] interfaces; providing a single Primary Rate conversion. It is a portable unit that can
be mounted on a desk. A kit of brackets is also available to allow the unit to be installed on a 19
inch rack. It is particularly suited for use in Customer Premises Environments (CPE) to interface
equipment into Virtual Private Networks.
Figure 1: InterChange iQ 2000 in a Private Network.
