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  1. SIP / Multicast Talk-Back Ceiling Speaker - Viking Electronics, Inc.

  2. PROCOMM JBCSP3 Noise CANCELING CB Speaker with Talk Back

  3. Viking 40TB-IP SIP Multicast Talkback Speaker

  4. 011394 SIP Speaker with Talk-Back - CyberData Corporation

  5. Cobra HG S500 Highgear CB Speaker, One Color, One Size

  6. Talkback Wall Speaker, Black, for ACS, VC-1061-BK – Valcom

  7. CB Radio Speakers | CB External & PA Speakers - Walcott Radio

  8. IPX Series IP-8SM Indoor Wall/Ceiling Mount IP Speaker - AtlasIED

  9. IP Round Ceiling, 8-Inch, Talkback, White, VIP-160A – Valcom

  10. Valcom V-1060A 8-in Talkback Round Ceiling Speaker - IP Phone Warehouse