Abstract: Methods and apparatus for supporting multiple emergency users in a push-to-talk group. The methods include receiving a first emergency alert from a first user device in the push-to-talk group; receiving a second emergency alert from a second user device in the push-to-talk group; causing the first emergency alert and second emergency alert to be provided to each of the console devices in the push-to-talk group; receiving, from the first user device, a first communication and receiving, from the second user device, a second communication; causing the first communication and the second communication to each of the console devices in the push-to-talk group. The methods further include receiving, from a first console device, a selection of one of the first user device and the first emergency alert; and, in response subsequently selectively routing a third communication from the first user device to the first console device and not to a second console device in the push-to-talk group.

Abstract: An embodiment method includes receiving, by a server of a telecommunications services platform, a request for a first call session quality indicator (CSQI) of a first client device, determining, by the server, first channel parameters of a first channel between the server and the first client device, and calculating, by the server, the first CSQI of the first client device in accordance with the first channel parameters of the first channel. The method further includes transmitting, by the server, the first CSQI to the first client device and receiving, by the server, a call session initiation request from the first client device after transmitting the first CSQI to the first client device.

Abstract: A Push-to-Talk-over Cellular (PoC) implementation for use in a wireless communications network, wherein one or more servers interface to the wireless communications network to perform the PoC call sessions. Both the servers and the mobile units that use the PoC call sessions communicate with each other using SIP/IP (Session Initiation Protocol/Internet Protocol) control messages within the wireless communications network, and one or more of the servers switches RTP/IP (Realtime Transport Protocol/Internet Protocol), RTCP/IP (Realtime Transport Control Protocol/Internet Protocol), or MBCP/IP (Media Burst Control Protocol/Internet Protocol) voice packets for the PoC call sessions between the mobile units across the wireless communications network.

Abstract: An embodiment method includes receiving, by a server of a telecommunications services platform, a request for a first call session quality indicator (CSQI) of a first client device, determining, by the server, first channel parameters of a first channel between the server and the first client device, and calculating, by the server, the first CSQI of the first client device in accordance with the first channel parameters of the first channel. The method further includes transmitting, by the server, the first CSQI to the first client device and receiving, by the server, a call session initiation request from the first client device after transmitting the first CSQI to the first client device.