SIP TRUNKING
Connect Your Existing Phone System with SIP Trunking
SIP That Works with Your Existing Environment
Keep the PBX You Already Use
Your business may already have a PBX, IP-PBX or other SIP-compatible calling environment. Prasmo SIP Trunking provides the voice connectivity around that existing setup rather than requiring you to replace the entire phone system.
Our team reviews your current environment and works through the technical requirements needed to establish the service.
- Existing PBX connectivity
- SIP configuration
- Codec compatibility
- Inbound and outbound calling
Configure Capacity Around Your Calling Requirements
Different businesses have different calling patterns. A sales operation, support team and multi-location company may each require different levels of concurrent call capacity.
Prasmo works with you to understand expected usage and provision a SIP service arrangement appropriate for your business requirements.
- Concurrent call requirements
- Inbound and outbound traffic
- Calling patterns
- Capacity requirements
Bring Multiple Locations onto a Common Voice Setup
SIP Trunking can support businesses operating across multiple offices or calling environments while allowing existing voice systems to remain part of the overall setup.
Prasmo helps determine the connectivity and configuration required for your locations rather than forcing every business into the same deployment model.
- Multi-location businesses
- Centralised voice connectivity
- Existing phone environments
- Location-specific requirements
Add the Business Numbers You Need
SIP connectivity and business numbers can work together as part of the same voice solution. Prasmo can help source applicable business numbers and configure them for use with your SIP environment.
Number availability, type and applicable requirements depend on the requested market.
Designed to Work with Your Voice Environment
Every SIP deployment starts with understanding the system you already have. Prasmo reviews the technical requirements of your environment and coordinates the appropriate service configuration.
SIP Interoperability
Review compatibility with your existing PBX or SIP-enabled calling environment before provisioning.
Codec Support
Confirm the voice codecs required by your existing setup and the proposed service configuration.
CLI Configuration
Define caller ID requirements for inbound and outbound calling, subject to number and service conditions.
SIP Header Configuration
Review signalling and header requirements where configuration is required for interoperability.
Concurrent Calls
Establish the number of simultaneous calls required for your business operations.
Testing & Troubleshooting
Complete configuration and call testing before moving the agreed service into production.
How SIP Trunking Works
SIP + Business Numbers
Pair SIP Trunking with business numbers for the markets and calling requirements relevant to your organisation. Prasmo can coordinate the SIP service and applicable number requirements as part of the same solution, reducing the need to manage separate suppliers for each component.
Onboarding is simple and effective
Tell us about your existing PBX, business numbers, locations, expected concurrent calls and calling requirements.
Prasmo coordinates the service setup, SIP configuration and technical testing with your team.
Once configuration and testing are complete, the agreed SIP service can be activated for business calling.
Compatible Platforms
Prasmo Telecom services are designed to work alongside a range of business communication and productivity platforms.
Looking to Connect Your
Existing Phone System?
Tell us what you use today, how your business handles calls and what you need from your SIP service. Our team can review the requirements and discuss an appropriate setup.
FAQs
What is SIP Trunking?
SIP Trunking connects a compatible business phone system to external voice services using SIP. It allows businesses to make and receive calls while continuing to use their existing PBX or compatible calling environment.
Do I need to replace my existing PBX?
Not necessarily. If your existing phone system supports SIP and is compatible with the proposed service, it may be possible to retain it. Prasmo will review your current setup as part of the technical assessment.
How many simultaneous calls can we have?
This depends on the concurrent calling capacity provisioned for your service. Prasmo will review your expected calling activity and requirements when defining the proposed setup.
Can SIP Trunking support multiple offices?
It can be used as part of a multi-location voice setup. The appropriate configuration depends on your existing phone systems, network environment and how you want calls handled between locations.
Can we use business numbers with SIP Trunking?
Yes. Business numbers can be configured for use with a SIP-based calling environment, subject to number availability, market requirements and the agreed service configuration.
Can we keep our existing business numbers?
This depends on the numbers, existing provider, market and applicable portability arrangements. Share your current numbers with Prasmo so the available options can be checked.
Can SIP calling connect with our CRM?
API-based integration can be considered where your CRM, calling environment and relevant systems provide the necessary APIs. Prasmo does not rely on prebuilt CRM plugins.
What information does Prasmo need to get started?
Your existing PBX or calling platform, required business numbers, locations, expected concurrent calls and inbound/outbound calling requirements provide a useful starting point.
What is required to activate SIP Trunking?
New customers complete Prasmo’s business verification and onboarding process before activation, alongside the commercial and technical requirements for the SIP service.