| Product Description | Cisco Network Interface Module - expansion module - FXS/DID x 2 |
|---|---|
| Form Factor | Plug-in module |
| System Requirements | Cisco IOS XE 16.5 and above |
| Device Type | Expansion module |
| Compliant Standards | G.711, G.729a, G.726, ITU-T H.323 |
| Network / Transport Protocol | RTCP, RTP |
| Ports | FXS/DID x 2 |
| Designed For | Cisco 4451-X; Integrated Services Router 4221, 4321, 4331, 4351, 4431 |
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