Voice Direct Access – Detailed Information

1. Service overview

Telstra’s Voice Direct Access Service allows you to use the Telstra network for all your voice and data calls. The service delivers a simple direct connection from your Customer Premises Equipment (CPE) e.g. a PBX, to Telstra’s PSTN network, without the use of access numbers or codes. (The type of connectivity provided will depend on the CPE that you are using. Telstra supports both ISDN and C7 Signalling Protocols).

Calling card platforms, predictive dial platforms and routers can also be directly connected to the Telstra network. You can make/receive calls to/from all national and international destinations and take advantage of Telstra’s extensive Geographic and Non-Geographic number ranges. In the UK we can also arrange to port your existing number(s) from your current supplier.

A monthly line rental applies and call charges are detailed in a destination-by-destination tariff schedule. You receive a single monthly bill from Telstra.

2. Service features

• Connectivity
  Telstra provides complete global coverage for outbound calls, and inbound calls are supported from anywhere to a full range of UK national numbers. In the instances where due to site location it is not possible to connect your equipment directly to the Telstra network, then we work seamlessly with third parties to provide a direct connection to the Telstra network. Connection to the Telstra UK network enables you to make and receive PSTN (voice and data) calls via the Telstra carrier switch platform and take advantage of our most competitive rates.

• ISDN Signalling protocols
  The ISDN signalling protocols currently supported by Telstra (Q931 and DASS2) are used for connections to/from your PBX or other telephony equipment. ISDN connections offer the following services:
  • Direct Dialling Inwards (DDI) 
    a range of network level numbers that can be forwarded to your PBX or telephony equipment. These numbers allow you to receive calls direct to specific extensions, instead of going via a switchboard.
  • CLI Network Presentation 
    allows your main network number to be presented as Calling Line Identity for all calls.
  • Caller Line Identity Presentation (CLIP)
    allows the End User to see who is calling them. The End User will only be able to receive this information if the caller has not restricted the sending of their number.
  • Caller Line Identity Restriction (CLIR)
    allows the End User to prevent their telephone number(s) from being presented on the called party’s telephone equipment.
  • Extension Level Billing (ELB)
    where 3 to 6 digit extensions are billed separately.

• Virtual Private Network (VPN) services
  You may need to connect multiple sites onto a private network. The Telstra switch will allow Direct Access sites to have VPN functionality.

• C7 circuits
  C7 protocols are generally used for interconnection to other service providers or carriers providing ingress and egress into the Telstra UK network. This type of connection can be used if you are reselling wholesale minutes – BTUP V1 and V2, ETSI ISUP V1 and V2, ANSI ISUP. C7 connections provide the following services:
  • Transport of ISDN features
  • Carrier grade level of service
  • INAP capability allowing connection to IN platforms Pre-Sales Special Order Approval is required for all C7 circuits.

• Customer programming
  Digital technology allows you to programme your CPE (PBX) with part or all of your assigned telephone number, so that incoming calls can be recognised and routed to the correct piece of terminal equipment. The Digits to Switch (DTS) option allows you to set the number of digits (from 3 to 7) delivered by the Telstra TDM network to your CPE (PBX) for call routing.

• Contract length
  Contract length is a minimum of 12 months, with subsequent 12 month periods, with a 35 day notice period.

• Order levels
  There is no minimum or maximum limit on a Voice Direct Access order. (However any order of four or more circuits will require traffic forecasts and Pre-Sales Special Order Approval).

• 24x7 Customer Service
  Should you need support, our EMEA Customer Service Centre (ECSC) can be contacted day or night via phone, email or through the Telstra Hub.