SIP Voice

Up to 50% savings on all your calls

Reduce your monthly telephone bills by substituting your traditional telephone services with lower cost calls made using GCOMM’s SIP Voice service. It’s an ideal solution for large corporations with more than 10 lines and a high volume of outbound calls.

Leverage your existing PBX investment

GCOMM implements the open SIP (Session Initiation Protocol) standard which is supported by all modern phone systems to leverage your existing PBX investment by using GCOMM’s national data network to make calls.

SIP can be installed on a PBX via SIP trunks and then connected to the GCOMM SIP service. The installation of SIP Voice service is simple and fast. Your PBX company simply configures your phone system for SIP routing and you are set to go.

As calls are made over GCOMM’s private IP network using business grade connectivity, you are guaranteed to experience end to end call quality.

Ideal for businesses that:

  • Have a high volume of outbound calls
  • Make a lot of calls to international numbers
  • Need to quickly and easily scale lines
  • Are moving to a location where traditional phone services can’t be delivered

Flexible and scalable SIP Voice service

You can use GCOMM’s SIP Voice to supplement your existing phone service by allowing all inbound calls to be delivered via your traditional landline and all outbound calls to be made via SIP. Or you can have both inbound and outbound calls come through SIP to realise additional savings. The service is highly flexible and can be scaled to your business’s needs.

Why GCOMM’s SIP Voice service?

Independent of the Internet
GCOMM’s SIP Voice is delivered over our high speed, high capacity private IP network that’s capable of supporting business grade call quality.

Guaranteed availability
The service comes with a comprehensive service level agreement which guarantees 99.90% uptime.

No flagfall fees
There are no fixed flagfall fees for establishing each call, as is the case with traditional telephone service providers.

Per second billing
In addition to our very low call rates, our SIP Voice service is based on per second billing helping you radically reduce your monthly phone charges.

SIP Voice technical specifications

Key service features

  • No flagfall, per second billing
  • New numbers available
  • Business grade call quality
  • IP only Voice trunks using the SIP (Session Initiation Protocol) standard
  • From 1 line to 100s of lines
  • Utilises private network links
  • Local, national, international or mobile call types supported
  • Inbound and outbound call services

Service requirements

In order for the SIP Voice service to be provisioned, you must have a PBX that supports SIP. You will also require a business grade broadband connection, for most businesses this means an Ethernet over Copper service with at least 2Mb dedicated for SIP.

Suggested broadband services for SIP Voice service:

Service activation process

Step 1: Confirm if the customer’s PBX supports SIP.

Step 2: Confirm if the customer has a business grade connection capable of supporting SIP Voice service.

Step 3: Customer submits an order for the SIP Voice service from GCOMM.

Step 4: GCOMM provides a service completion advice with the SIP authentication details to the customer.

Step 5: Customer contacts their PBX support company for SIP re-configuration.

Frequently Asked Questions

Q: How does GCOMM charge for the SIP Voice service?

A: The service fee is determined based on the number of lines a customer wishes to activate.

SIP Voice service FAQs

Q: How do I know if my PBX supports SIP?

A: You will have to contact your PBX support company to find out if the PBX you have supports SIP.

Q: Does GCOMM perform service configuration?

A: No, you must contact your PBX support company and ask them to configure the SIP Voice service on your PBX.

Q: What type of connectivity do I need to have to be able to use the SIP Voice service?

A: We recommend that you have at least a 2Mb business grade broadband service from GCOMM. However, for the optimum quality of calls, a faster connection is recommended.

Q: Do I need to make calls through my computer?

A: No. Once you set GCOMM’s SIP Voice service, you can use it like a regular phone service.

Q: How many lines can I have?

A: You can have an unlimited number of lines, from 1 to as many as your business requires.

Q: Can I use GCOMM’s SIP Voice service for both inbound and outbound calls?

A: Yes, you can use SIP Voice for both inbound and outbound calls. If you wish to use the service for inbound calls, a number will have to be assigned to all your inbound lines. This will require either new number be allocated by GCOMM or you can port your existing telephone number to GCOMM’s SIP Voice service.

Q: What if I want to keep my current landline?

A: You can keep your landline. You can allow all incoming calls to come through your traditional landline and all outgoing calls through SIP to ensure your call costs are reduced.

Q: How does GCOMM charge for the SIP Voice service?

A: The service fee is determined based on the number of lines a customer wishes to activate.

Q: Is there a fixed start fee per call?

A: No, there is no initial fixed fee to establish each call (flagfall). The calls are charged on per second basis.

Q: Does the SIP Voice service come with a service level agreement?

A: Yes, there is a 99.90% uptime service level agreement.

Q: Does the SIP Voice service support calls to international and mobile phones?

A: Yes. You can make calls to local, national, international and mobile numbers using SIP.

“GCOMM’s voice services are designed for business – per second billing, no flagfall fees and high quality calls. You’ll save up to 50% on your telephony.”

Lorna Ryan, Account Manager, GCOMM

Brochure: GCOMM Network Capabilities

Learn more about the GCOMM network, our Network Operations Centre, our network capabilities and the services we offer, including private IP network solution and centralised Internet gateway

Service benefits

Significant cost savings

Using GCOMM SIP trunks helps you save up to 50% on all your calls by bypassing the expensive PSTN/ISDN voice telephone systems.

High voice quality

Our state-of-the-art network infrastructure utilises advanced QoS to ensure the highest voice quality.

Scalable and flexible

You can use as many SIP trunks or lines as your business requires, from 1 to 100+ to maximise savings across your organisation.

Free inter-office communication

Reduce your phone bills by making free calls between your business locations, as SIP to SIP calls don’t cost anything.

Reliable and secure

Calls are transported via GCOMM’s private IP network ensuring reliability and security for your voice and data.

Number mobility

Unlike the traditional telephone system, your SIP numbers can be taken with you to any location that your business moves to.

Simple and easy

SIP is simple and fast to configure on your PBX and no changes need to be made to your existing telephone system.

Multiple feature options

Offers a number of features, mostly for free that would otherwise create additional charges on your phone bill.

Contact us regarding SIP Voice service

For more information about GCOMM’s SIP Voice service, contact us on 1300 221 115 or send us an enquiry and we will respond within 48 hours.

Contact us regarding SIP Voice service

For more information about GCOMM’s SIP Voice service, contact us on 1300 221 115 or send us an enquiry and we will respond within 48 hours.