SANDEEP KUMAR PENCHALA. ENTERPRISE-GRADE MOBILE PUSH-TO-TALK SYSTEMS FOR EMERGENCY SERVICES: ARCHITECTURAL FRAMEWORKS, SECURITY PARADIGMS, AND PERFORMANCE OPTIMIZATION. TPM [Internet]. 2025 Dec. 5 [cited 2026 Jun. 13];32(S9 (2025): Posted 15 December):2408-23. Available from: https://tpmap.org/submission/index.php/tpm/article/view/3780