In telecom, 'SIPs' stands for Session Initiation Protocol, a signaling protocol used to establish communication sessions for voice and video calls over the Internet. SIP enables session management by initiating, modifying, and terminating multimedia communications, thereby facilitating VoIP (Voice over Internet Protocol) services. SIP's flexibility allows it to support a range of services, including video conferencing and instant messaging, making it a critical component of modern telecommunications infrastructure.