Interface and authorization for cross-network communications

A system comprising:

• at least one processor;
• and
• a memory communicatively coupled to the at least one processor, the memory storing instructions which, when executed, cause the at least one processor to perform operations comprising:
• receiving at least one signal sent by a first communication device, the at least one signal including a request to communicate through an interactive voice response (IVR) farm with a radio talk group comprising at least one second communication device, the request received from the first communication device over a Public Switched Telephone Network (PSTN), the at least one second communication device arranged to communicate over a radio network that is communicably independent from the PTSN;
• authenticating a user of the first communication device based on at least one credential included in the at least one signal;
• selecting, based on the radio talk group, one of a plurality of voice radio interfaces (VRIs) communicatively coupled to the IVR farm through an IP network, wherein the selected VRI is designated to intermediate communications sessions with the radio talk group;
• and
• establishing a two-way communication session between the first communication device and the at least one second communication device through the selected VRI, wherein the selected VRI intermediates between the PSTN and the radio network to establish the two-way communication session.

A non-transitory computer-readable medium storing one or more instructions executable by a computer system to perform operations for imaging and locating near-surface heterogeneities, comprising:

• receiving at least one signal sent by a first communication device, the at least one signal including a request to communicate through an interactive voice response (IVR) farm with a radio talk group comprising at least one second communication device, the request received from the first communication device over a Public Switched Telephone Network (PSTN), the at least one second communication device arranged to communicate over a radio network that is communicably independent from the PTSN;
• authenticating a user of the first communication device based on at least one credential included in the at least one signal;
• selecting, based on the radio talk group, one of a plurality of voice radio interfaces (VRIs) communicatively coupled to the IVR farm through an IP network, wherein the selected VRI is designated to intermediate communications sessions with the radio talk group;
• and
• establishing a two-way communication session between the first communication device and the at least one second communication device through the selected VRI, wherein the selected VRI intermediates between the PSTN and the radio network to establish the two-way communication session.