ISDN hangup cause codes provide information as to why a call has been terminated many are shared with SIP.  The list of hangup cause codes below provides detailed information as to the underlying cause behind a call hangup: Code No. 0 This is... Read More

Connected Line Identification Restriction Description This feature provides an end user with the ability to allow/stop a calling party seeing their phone number, where another user has forwarded a call to them.  This feature is only available... Read More

Group Calling Line ID Description Use the Group Calling Line ID feature if you want to use a single Calling Line Identity for:- All Users within a given Site A Group of Users within a given Site (e.g. sales department, HSIPT Trunking Users) If you... Read More

Introduction The following document type provides a comprehensive user guide on how to use BTW WHC features.  Where appropriate the guide will be backed up by screenshots to support the recipient of this guide. It provides a number of... Read More

Introduction This document provides a list of the Authorised Equipment, that BT Wholesale (BTW) support for use on IP Voice Services (IPVS). This list includes the following device types: IP Phones IP Phone Side Cars Analogue Terminal Adaptors ... Read More

  Cables Cabling RJ45 RJ21 MSAN We use 568B for almost everything ethernet Standard networking connectors for Ethernet connections. Rumor has it that only the “A” standard is accepted for government work and the “B”... Read More

Terms & Conditions Annex - IC-talk HC Service specific Terms and Conditions for the IC-talk HC services. DEFINITIONS The following definitions shall apply to the provision of the Service, in addition to those in the Main Terms and Conditions... Read More

Internet Central Limited - Main Terms and Conditions  This page (together with the documents referred to on it) sets out the terms and conditions as amended by IC from time to time (Conditions) on which you (Customer) may access IC’s... Read More

  You may see BT engineers moving "E side" or "D side" connections. Here's a note about them.. E-SIDE (Exchange Side) - Exchange to PCP D-SIDE (Distribution Side) - PCP to Customers PremisesThe "PCP" is the "Primary Connection Point". These are... Read More