Please see Special Notice

Embark provides a Virtual Private Network(VPN), via Embark Digital Access Lines (digital) and Embark Centrex Services (analogue). Within these two Access Line services there are also Featureline Corporate Digital (2 Megabit) Access Lines and Featureline Corporate Centrex (Analogue) Access Lines. The Digital Access Lines are delivered via 2 Megabit bearer circuit/s, connected to Customers PBX's, using Digital Private Network Signalling System (DPNSS). The Centrex Service is delivered to the Customers Site, using the same access and mechanisms as PSTN technology and provides Customers with Centrex based services, predominantly to replicate the features provided by small PBX's.

Embark and Featureline Corporate enables a Customer with both large and small sites to link these together into a corporate telephone network. Key benefits are efficiency through a consistent dial plan and company network-wide call discounts.

A Customer can utilise Digital Access Lines to form a `Retail Connection' gateway to Other License Operators(including Mobile Network Operators). For both a standard Digital Site and Retail Connection site, the Embark network boundary is the Network Terminating Point at either the Customer's or Other License Operators point of presence.

Centrex Services (Embark Centrex Access Lines and Featureline Corporate Centrex Access Lines) may be classed as either Standard lines or Auxiliary lines. Standard lines are where no Hunt Group working is required. Auxiliary lines are where Hunt Group working is required. Hunt Groups allow Customers to publish a single number and have calls to that number distributed across the lines acting as members of the associated Hunt Group. A Queuing facility is also available, at additional charge, for queuing incoming calls against a Hunt Group, if all extensions are busy.

All Centrex Access Lines or Featureline Corporate Access Lines may form part of a call Pick-up Group, where an unanswered call delivered to an extension may be answered by another extension within the same Pick-up Group.

Service Care Levels

For details of the Service Care Levels available, see Section 14.

Facility Usage Charges

Some Embark Centrex Access Lines and Featureline Corporate Access Line facilities/features will result in either facility set-up charges or call charges, as described below.

Facility set-up charges will be incurred for the following Embark Centrex Access Line features, as detailed in Section 2 Part 4 :

- Reminder Call

Normal Embark call charges will apply for the following types of call, established through the use of Embark Access Line facilities or features:

- Additional calls resulting from Three Way Call

- Each diverted leg of calls resulting from Call Diversion

- Each transferred part of calls resulting from Call Transfer

The following features are provided on all Standard Centrex Access Lines and Featureline Corporate Access Lines at no additional charge (excluding any set-up or call charges associated with usage of that feature). But they are not available on Auxiliary Centrex Access Lines and Featureline Corporate Access Lines (i.e. they are not available to lines configured with Hunt Group working).

Call Waiting

Ring Back.

BT's Call Minder service is available to Centrex Access Lines and Featureline Corporate Access Lines (link to Section 2 Part 21)

Digital Access Lines

For sites requiring Embark Digital Access Lines (DALs), rental charges are applied per site and per channel according to the number of channels at that site. For sites requiring Featureline Corporate Digital Access Lines rental charges are applied per channel.

NB: No reduction to connection charges is available where a Customer is transferring to Embark Digital Access from any similiar network service.

Digital Access Lines - Direct Dialling In (DDI)

Direct Dialling In Numbers will work with Digital Access Lines only. A maximum of 5 Direct Dialling In (DDI) ranges and/or single numbers, including the site main billing number, are permitted per site to handle incoming public network calls to an Embark Digital Access Site. The initial connection and rental of these DDI numbers is included in the standard connection and rental charges applied to the Digital Access Lines, if within a quota of 10 DDI numbers per channel ( i.e., if a Customer has 10 Digital Access lines, they can have 100 DDI numbers within quota ). Connection charges and rental applies for DDI numbers provided outside of quota .

A Customer will normally be able to retain any existing DDI numbers, when transferring from ISDN30 service to Embark, where the existing serving exchange is capable of supporting the Embark service. DDI numbers may not always be available from exchanges where Embark service is available.

Forced OnNet

Forced OnNet (FON) provides the capability for the Embark network to identify calls dialled from the FON registered Embark Site, using a standard public network Directory Number (DN), that is part of the Customers dial plan and if that dialled number is destined for another Embark Site the call will be routed and charged as an OnNet call.

Where Embark Customers have a retail connection to another network, whether operated by BT or another operator, the Embark Customer will be responsible for informing their BT Embark representative of a list of public destination numbers, hosted on the other network, for which they wish FON identification and functionality to. The Embark Customer will also be responsible for identifying to their BT Embark representative any changes to those destination numbers hosted on the other network. Registration of such numbers as Forced OnNet destinations will be charged in addition to any other per Site or per network charges payable for the Service.

Call Pricing Scheme

Three call pricing schemes are available for selection by the Customer. The pricing scheme selected will determine the call price discounts applicable to all chargeable calls made from a Customer's Embark Access Lines. Pricing schemes B and C have an associated rental charge. This charge is applied quarterly to a single Customer nominated billing account. No additional site fees are chargeable.

NB These call pricing schemes do not apply to Featureline Corporate Access Lines