The latest software release and Module 4 DSP allows operation of four VoIP telephones or IP soft-clients using SIP (Session Initiation Protocol). All telephones connected to the elmeg T484 - including traditional analogue or even ISDN terminal devices - can take advantage of cost-effective Internet telephony via SIP providers.
The integrated Least-Cost-Routing (LCR) function automatically selects the most economical connection for the call while the elmeg T484 supports Calling-Name-Identification-Presentation (CNIP) to display the caller's name from the system's directory. High-compression voice codecs G.711, G.723, G.726 and G.729 ensure optimal voice quality even when bandwidth conditions are poor.
The Module 4 DSP from Funkwerk allows up to ten SIP accounts to be configured in compliance with the RFC-3261 standard. Integrated bandwidth management and quality-of-service functions guarantee high voice quality and users retain all of the familiar telephone-system functions such as call waiting, call back, broker's call, three-way conferencing and call forwarding.