ISDN BRI Loopback Device
Miniature ISDN basic rate (2B+D) line powered loop back device
Product overview
The PDS Loopback device is a miniature ISDN basic rate terminal which plugs in to a spare socket on your NT1 equipment, it can be called at any time from any location to test the availability and quality of the line under test. Three models are available:
- Answer all calls immediately, ideal for creating a remote loop back number;
- Answer all calls after a 10 second delay allowing other users or devices to answer first;
- Answer calls only if a Called Party Subaddress information element is present in the incoming SETUP message/s with a value of 0000 (four zeros).
LED’s on the device indicate the presence of 40V Phantom Power on the S bus (which must be available in normal or restricted mode), ‘PH ACTIVE’ confirms synchronisation has been achieved, electrical signals (Layer 1) are present and that signalling from the ISDN Network is active, the third ‘LOOP’ LED shows call activity. When indicating call activity, the ‘LOOP’ LED flashes at different rates to indicate a call using B1, B2 or both B channels.
Product features...
- May be used on any ETSI Euro-ISDN basic rate line with Phantom Power (PS1).
- Perfect for checking that an ISDN line is working correctly.
- Ideal for testing the quality of the line by returning video and/or audio.
- Lightweight and very compact making it suitable for postage to any site.
- Ideal for creating loop back test numbers.
- Suitable for use by anyone, irrespective of experience.
- Provides clear LED indications of power, line status and call activity.
- A low cost high performance test tool.
Convenience
This lightweight device may be sent by post to any destination at which you wish to test the quality and availability of ISDN basic rate lines. It can be operated by anyone since all it requires is connection to the socket on an NT1. LED’s on the device provide an immediate indication of line presence and when a call arrives you will see that it has been received, has connected and which B channels are active.
A number of current users employ the Loopback in order to test the suitability of their ISDN basic rate lines for video conferencing by sending the Loopback device to a remote site, then calling it from a video conferencing terminal plugged in at the local site. When the call is made and connects, the user's own image appears on the video terminal this shows them the quality of the image going to the remote site and being returned so is indicative of a "worst case scenario" which is ideal. Other users simply use the device to verify that ISDN basic rate lines are working correctly and reliably.
Download our brochure for a comprehensive list of features.
