The EM3‑HDA‑8FXS/DID is an 8‑port analog voice and fax expansion module for Cisco ISR 2900/3900 Series routers.
Each port is individually configurable to support either FXS (Foreign Exchange Station) or DID (Direct Inward Dialing) signaling—no port pairing required.
It plugs into a high-density extension module, allowing up to 24 voice/fax sessions with additional expansion boards.
Ideal for branch or enterprise offices needing integrated PSTN voice/fax lines alongside data services.
EM3-HDA-8FXS/DID
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The EM3‑HDA‑8FXS/DID is an 8‑port analog voice and fax expansion module for Cisco ISR 2900/3900 Series routers.
Each port is individually configurable to support either FXS (Foreign Exchange Station) or DID (Direct Inward Dialing) signaling—no port pairing required.
It plugs into a high-density extension module, allowing up to 24 voice/fax sessions with additional expansion boards.
Ideal for branch or enterprise offices needing integrated PSTN voice/fax lines alongside data services.
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