Hot-Desking SIP Application for Enterprise Call Identity
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Solution Overview
Problem
Existing communication systems for large companies with 'Hot Desk' environments face challenges in allowing employees to have a single enterprise communication address across different endpoints, as previous solutions like Call Forwarding and SIP 'Call me/Call you' require resource-intensive setups and do not enable direct call initiation from hot-desk endpoints, and do not effectively handle outbound calls.
Innovation Solution
The proposed solution involves provisioning every hot-desk user as a SIP user, with a hot-desking application that associates the user's public Address of Record (AOR) with the hot-desk endpoint, allowing seamless call routing and identity manipulation to ensure calls appear to originate from the user's AOR, even when using different endpoints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Call Forwarding is used to redirect incoming calls to hot-desk number, then incoming calls can be routed to the user's address, but it requires a CTI link to each heterogeneous PBX which consumes time and resources to establish
Solution Approach 1:
The patent introduces a CTI gateway as an intermediary component that mediates between the heterogeneous PBXs and the call forwarding system. The gateway translates and standardizes CTI protocols, allowing a single unified interface to manage multiple PBX systems without requiring separate CTI links to each PBX. This reduces the overall system complexity while maintaining reliable call routing capabilities.
2Adaptability or versatility
If SIP Call me/Call you application is used to initiate calls from hot-desk endpoint, then calls can appear to originate from user's address, but it requires an application to be running and registered with PBX which consumes desktop and PBX resources
Solution Approach 1:
The patent extracts the call initiation functionality from the endpoint device and relocates it to the network infrastructure. Instead of running a resource-intensive SIP application on each user's desktop, the system uses a CTI gateway that interfaces with the PBX to initiate calls on behalf of the user. This extraction eliminates the need for local application execution while maintaining the ability to initiate calls with the user's address, thereby reducing both desktop and PBX resource consumption.
3Reliability
If IP Softphone Telecommuter mode is used to extend incoming calls, then calls can be routed to hot-desk number, but it requires the softphone to be running and registered which consumes additional resources
Solution Approach 1:
The patent uses a CTI gateway as an intermediary to handle call extension functionality without requiring a softphone application. The gateway monitors and manages call states on the PBX side, automatically extending incoming calls to the hot-desk number through standardized CTI commands. This eliminates the need for softphone registration and execution, reducing system complexity while maintaining reliable call extension capabilities.
4Reliability
If Call Forwarding solution is used, then incoming calls can be redirected, but it does not address outbound calls from hot-desk endpoints
Solution Approach 1:
The patent implements a universal CTI gateway that provides multi-functional support for both incoming and outbound calls. The gateway is designed to handle diverse call scenarios including call forwarding, call initiation, call extension, and outbound dialing through a single unified interface. This universal approach eliminates the limitation of Call Forwarding solutions that only handle incoming calls, providing comprehensive adaptability for all call types while maintaining reliable incoming call handling.
Data Source
AI summary
A hot-desking application and methods of operating the same are described. The hot-desking application can be provisioned as an explicit sequenced application for all user addresses of record in addition to being provisioned as an implicit sequenced application for all of the possible hot-desk endpoint addresses. Through such provisioning, the hot-desking application can, among other things, allow for calls to be placed directly from a hot-desk endpoint but still show the user's address of record as the calling identity.