Gamma SIP Trunk Call Manager

Manage your entire inbound number estate
through your SIP trunks


Gamma SIP Trunk Call Manager

SIP Trunk Call Manager takes SIP beyond a connectivity service into a world of multi-feature applications, putting you in control.

SIP Trunk Call Manager provides you with all the benefits of Gamma SIP Trunks together with a centralised inbound call management service with a host of features, accessed through an easy-to-use web portal and mobile app. SIP Trunk Call Manager offers powerful business continuity as standard, giving you the ability to manage your entire number estate and all aspects of your inbound calls. It enables you to consolidate all your numbers onto a single platform, meaning that you’ll never miss a call.

The benefits of Gamma SIP Trunk Call Manager

  • Enhanced SIP service – gives you full and direct control of your inbound numbers
  • Tailored business continuity – never miss a call
  • A direct ISDN replacement – save up to 50% on line rental and up to 25% on calls
  • 01, 02, 03 and 08 termination on subscribed Gamma SIP Trunks – no number translation
  • One point of contact providing your SIP trunks and call management via one simple solution
  • Easy management via an app and web portal

Want to know more? Contact us directly via the form below, or learn about working with one of our platinum partners

From the past to the future: How to make the move from ISDN to SIP

Gamma’s team of telecoms experts offer practical advice on the main steps you can take to successfully migrate to SIP trunking, with insights on how the Open University succeeded in making the transition.

Range of inclusive features

SIP Trunk Call Manager puts you in complete control of your inbound numbers.

Geo or non-geo termination directly on the SIP endpoint

Terminate any 01, 02, 03 or 08 number and control via an intuitive online portal or app

Termination on number

Redirect inbound calls to achieve business continuity and flexible working

Time / day of week routing

Schedule call routing in advance according to business hours and call handling preferences

Divert on busy/out of office/no answer

Maximise call handling potential and provide an improved service to the caller

Snapshot Management Information Statistics (MIS)

View call handling performance at a glance and monitor inbound call handling efficiencies

Email alert on missed call

Ensure you are notified of any unanswered/engaged calls – ideal management tool for ensuring staff productivity and following up every sales lead

‘One Touch’ business continuity

Pre-build designated business continuity call plans for your Inbound number(s) with the ability to invoke/restore last active call plan instantly – immediate continuity in the event of office evacuations

Date routing

Set up date-specific routing in advance – e.g. Bank Holidays

Call whisper agent notifications

Popular applications include the provisioning of an announcement to be played to the call answering agent on call pick up which prompts them to answer the incoming call with an appropriate greeting, thus providing a professional and personal impression to the caller

Hunt Groups

Serial, random, prioritised or simultaneous hunt group enables calls to be answered by specific people or the most available person

Call Distribution

Serial, hunt group and percentage-based routing enables load balancing of calls across sites or teams of people

Call Queuing

Queue incoming calls on a destination number to assist with call handling during peak busy periods. End user configurable announcements, breakout and overflow options. Live queue stats enable effective queue management


Demonstrate excellent customer service by providing callers with an option to leave a message when unavailable to take their call. Customise voicemail messages to prompt users to leave details for a call back

Advanced statistics

Online access to comprehensive call statistics which enable informed business decisions. Advanced management information relating to call handling efficiencies; productivity, call patterns and caller behaviour. Data includes time to answer, call waiting time, call outcome and caller details

Push reports – advanced statistics via email

Provides recipients with full or summarised advanced statistics reports via email for daily, weekly or monthly periods

SIP Trunk Call Manager App

Provides quick access to key functionality and ability to view essential call stats whilst on the move and access to call plan routing changes via a handheld smartphone/device

The above features are inclusive on all the numbers you purchase giving you total control over your own DDI. In addition, we offer a number of chargeable premium features such as Area-based Routing, Announcements and Auto Attend (IVR) which can be applied to individual DDIs as required.

Combine these features with the ability to fully control all aspects of the service via a unique web-based portal and app service and you get an incredibly powerful solution for your business.

Have you seen our other products?

gamma sip trunking

SIP Trunks

Gamma SIP Trunks connect your business with our nationwide network, giving you access to the PSTN and provides a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls.


Horizon is a hosted phone service that provides an extensive range of fixed and mobile telephony capabilities via an easy-to-use web portal.




You may also be interested in