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Fact sheet: WLR3 ISDN30 Two WLR3 ISDN30 variants are available – ISDN30e (the ‘e’ stands for European Telecommunications Standards Institute or ETSI signaling system), and ISDN30 DASS (Digital Access Signalling System). Product benefits We can provide WLR3 ISDN30, subject to survey, from any digital telephone exchange, providing a 2Mbit/s port is available. The transmission path can be via copper pairs, transverse screen, fibre cables or microwave radio. ISDN30e Each ISDN30e service delivers 30x64kbit/s channels and a 64kbit/s channel for signalling to the full European standard, via an interface to a 2Mbit/s connection. ISDN30 DASS Each ISDN30 DASS service delivers 30x64kbit/s channels via a G703 interface to a 2Mbit/s connection. NG: G703 is common channel UK proprietary signalling system known as DASS 2. Call types Call routing and call package flexibility You can route calls over the BT network, for which you’ll be charged by Openreach. Alternatively, you can route them over an alternative network via Carrier Pre-Select or via Indirect Access (NB: To protect your call revenues, you can order Indirect Access Call Barring on a per exchange basis). Resilience Your options include alternative routing, diverse routing, Direct Dialling In (DDI) dual parenting, Site Assurance and Out of Area Working. n 64kbit/s Unrestricted (Category 1): These calls require an end-to-end digital path to be connected. n Speech (Category 2): These calls will look for an end-to-end digital path but will connect via a part-analogue path. n 3.1kHz audio calls: These calls will look for an end-to-end digital path but will connect via a part-analogue path. They’re used mainly for fax and modem calls, where speech compression links can be avoided (i.e. on international routes). WLR3_ISDN30_3.indd 1 01/09/2011 09:58 Calling and network features Hunt groups You can add a range of Calling & Network features to a line to provide your customers with additional functionality. They’ll be able to program some of them themselves. You’ll have to program others. Hunting on WLR3 ISDN30e exchange line groups is sequential (i.e. where the first free line in the group is selected. A single number hunt group can be configured on a single service. Cyclic hunting is available.) Direct Dialling In Hunting on WLR3 ISDN30 DASS exchange line groups is also sequential. Two or more DDI or non-DDI hunt groups can be configured in a single service, providing they occupy separate channels (i.e. a channel may not be a member of a DDI or non-DDI hunt group). WLR3 ISDN30e supports the following DDI numbering options: n 1 number n 2 single numbers n 3 single numbers Route to 15x n 4 single numbers This feature lets you directly receive calls made by customers to your own customer service numbers. n 5 DDI ranges max n 1 single number and max of 4 DDI ranges n 2 single numbers and max of 3 DDI ranges n 3 single numbers and max of 2 DDI ranges n 4 single numbers and max of 1 DDI range. WLR3 ISDN30 DASS supports one number with up to five DDI ranges across the same channels. If the customer requires more than one DDI range across the same channels, the last six digits of all the numbers can be different, but the digits in front of the last six must stay the same. For example, 020 7492 1000 – 1999 or 020 7492 5000 – 5999 are both acceptable, while 020 7492 1000 – 1999 and 020 7356 1000 – 1999 are unacceptable. www.openreach.co.uk The telecommunications services described in this publication are subject to availability and may be modified from time to time. Services and equipment are provided subject to British Telecommunications plc’s respective standard conditions of contract. Nothing in this publication forms any part of any contract. BT, Openreach, and the BT logo and the Openreach identity are trademarks of British Telecommunications plc. © British Telecommunications plc 2011. Registered office: 81 Newgate Street, London EC1A 7AJ Registered in England No: 1800000 Produced by Openreach Designed by Westhill.co.uk For more information on WLR3 ISDN30 visit www.openreach.co.uk or contact your Openreach Sales and Relationship Manager. PHME 61158 WLR3_ISDN30_3.indd 2 01/09/2011 09:58