Lotus Sametime Unified Telephony is a carrier-class SIP softswitch that is scalable from 300 to 100,000 users per system. When networked, the number of subscribers are virtually limitless. The system runs on highly reliable, fault-tolerant IBM eServer xSeries servers using SuSe Linux Enterprise Server Operating System from Novell. The core protocol of Lotus Sametime Unified Telephony is SIP. In addition to industry-standard SIP, Lotus Sametime Unified Telephony supports SIP-Q (QSIG over SIP) for interfacing to legacy PBX systems.
SBC (Session Border Controller)
An SBC (Session Border Controller) can be used in VoIP (Voice over IP) networks to exert control over the signaling and media streams involved in setting up, conducting, and tearing down calls. SBCs are put into the signaling and/or media path between calling and called party.
SBC (Session Border Controller) - Integrated Solution
In an integrated LC x3250 system, the Session Border Controller functionality is part of the survivable Open Branch solution. No separate hardware is necessary.
PSTN (Public Switched Telephone Network) Connection
A PSTN (Public Switched Telephone Network) is a domestic telecommunications network usually accessed by telephones, key telephone systems, private branch exchange trunks, and data arrangements. Completing the circuit between the call originator and call receiver in a PSTN requires network signaling in the form of dial pulses or multifrequency tones.
SIP Trunking overview
SIP trunking connects IP telephony with traditional PSTNs (Public Switched Telephone Networks). It enables enterprises to communicate over IP not only within the company, but also to outside PSTNs, thus they can make full use of their installed PBXs (Private Brand eXchanges).
With job ID handling, it is possible for the user to insert a job id for every task, change the status of the jobs and resume working on jobs manually.