Cisco EM3-HDA-8FXS/DID | 8-Port Voice / Fax Expansion Module

1. Compatibility: Cisco 2821, 2851, 3825, and 3845 Integrated Services Routers.
2. Ports: 8 FXS/DID ports.
3. Voice Codecs: G.711, G.723.1, G.729A/B, G.726, and iLBC.
4. Fax Support: T.37 and T.38.
5. Caller ID Support: ETSI (European Telecommunications Standards Institute) and Bellcore Type 1.
6. Ring Frequency: 25 Hz for UK, 20 Hz for North America, and configurable for other countries.
7. Maximum Ringer Load: 5 REN per port.
8. Loop Current: 25 mA maximum.
9. Power Consumption: 10W.
10. Operating Temperature: 0 to 40°C (32 to 104°F).
11. Storage Temperature: -25 to 70°C (-13 to 158°F).
12. Operating Humidity: 10 to 85% non-condensing.

Notes:
1. This expansion module allows you to add 8 additional analog voice or fax lines to your Cisco router.
2. It supports a variety of voice codecs and fax protocols, making it a versatile choice for small to medium-sized businesses.
3. The module is easy to install and configure, and it is backed by Cisco's reputation for reliability and quality.