Over the years, the feature sets of conventional PBX platforms have increased to encompass a large array of features and services. However, with the deployment of newer IP-PBXs, often only the most used features have been ported over. This gives a clear indication of the features that are most used and that provide the most benefits to the end users. In turn, this has clarified which PBX capabilities most rapidly need to be transferred to the mobile.
A GSM based solution for business should be able to switch calls transparently and to apply call routing and/or call control. The ability to direct calls to any device, mobile or fixed, following a set of rules regarding primary and secondary / alternative contact points enables fixed / mobile integration as all handsets and networks are seen as equal. Such an approach allows for the rapid deployment of complex application services, once basic connectivity is established, as an 'edge of network' service.
The services required by most businesses are:
- Single direct dialling inbound and outbound
- Single mailbox for voice and fax
- Message waiting indication
- Transfer – blind and consultation
- Calling line identification presentation
- Call screening
- Call recording
- Manager/Secretary working
This list represents a base line of functionality commonly used by businesses to improve reach and productivity.