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.
SIP Private Networking
SIP Private Networking is the network protocol of choice when no QSIG legacy PBXs are in the customer network. This eliminates the need to convert between SIP and SIP-Q protocol for a station-to-station call between two Lotus Sametime Unified Telephony systems. SIP Private Networking is sometimes also referred to as Enterprise SIP Trunking or Enterprise SIP Peering.
SIP-Q Private Networking
The SIP-Q protocol refers to SIP signaling with QSIG protocol, using Lotus Sametime Unified Telephony CorNet-NQ extensions and is used for interworking between different systems, which does not support native SIP signaling.
Hosting Multiple Private Networks
Multiple Business Groups spanned across Telephony Control Server systems in a hosted environment realize the required SIP and/or SIP-Q Private Networking Endpoints for each Business Group via 'virtual endpoints'.
Lotus Sametime Unified Telephony Managing SoftSwitches
The Telephony Control Server Assistant supports the Multi-Node Administration and allows the logged-on subscriber to administer several Lotus Sametime Unified Telephony switches in parallel, without requiring a second login.
Signaling Management handles protocol functionality, interfaces and interacts with the Lotus Sametime Unified Telephony maintenance functions.
Operation Mode Management
The Operation Mode feature allows the administrator to view and set the Operation Mode for each node.
Remote Access provides secure shell access to Switches and Gateways.
SOAP/XML Client Management
The SOAP/XML Client feature allows you to display all Client Profiles available in the system and to add, edit and delete Client Profiles.
Deployment Service (DLS) Configuration
The DLS server allows you to gain remote access for administrating the connected workpoints.
Telephony Control Server Deployment Service (DLS) Status
With the DLS Status feature it is possible to get information about the current status of DLS jobs.
Connection Close by TTUD Time Out Parameter
A number of active but idle connections can lead to resource attacks. The dimension of time to close connection is defined by a TTUD (TCP-TLS-UDP Dispatcher) TimeOut parameter. To avoid the resource leaks this parameter should be a relatively small value.