Your Source for New or Used Cisco EM-HDA-4FXO=
Cisco 3700 Series  Cisco 3700 Series Network Modules EM-HDA-4FXO= 4-port voice/fax expansion module FXO
The voice/fax modules for the Cisco 26/28/36/37/3800 Series multiservice access routers enable packet voice technologies including voice over IP (VoIP), voice over Frame Relay (VoFR) and voice over ATM (VoATM). Cisco voice solutions provide the means for integrating both voice and data within a single network allowing users to take advantage of services, such as toll-bypass, without sacrificing voice quality. Cisco IOSŪ Software also incorporates built-in quality-of-service (QoS) features along with standards-based (FRF.11 and FRF.12) encapsulation and fragmentation, providing efficient direct transport of voice and fax over IP, Frame Relay, and ATM networks. These Cisco IOS solutions enable time-sensitive voice traffic to be moved across even low-bandwidth WAN connections with the priority and quality that voice/fax demands. Transporting voice over IP networks continues to provide transport flexibility since IP can be routed across a multitude of WAN technologies (leased lines, Frame Relay, and ISDN) along with providing direct connectivity to the desktop.
These high-density analog voice/fax network modules also provide the gateway to Cisco AVVID for calls to and from the PSTN and legacy telephony equipment (including PBXs, analog telephones, fax machines, and key systems). Users can deploy networks which leverage investments in existing legacy telephony equipment while also deploying and integrating IP telephony immediately or in the future. These network modules enable users to operate at any point on the voice, video, and data integrated infrastructure spectrum while incrementally adding connections to both legacy telephony and IP telephony on these networks.
The analog voice/fax network modules install into Cisco 2600, 2800, 3600, 3700 and 3800 Series network module slots and provide standard analog interfaces to the telephony equipment and the PSTN. The high-density analog voice/fax network modules (NM-HDA) serve up to 16 analog ports, or four times the number of ports supported by the low-density analog voice/fax network module (NM-2V).
Specifically, the NM-HDA contains four FXS ports on the base board and room for two expansion modules (EM). The two types of EM, daughter cards that plug into the NM-HDA, available are an eight port FXS and a four port FXO. Using different combinations of ports on the base board and two EMs, an NM-HDA can service up to 12 FXS + 4 FXO ports, or 4 FXS + 8 FXO ports. (Note: A configuration using two 8-port FXS EMs is not supported.)
Each NM-HDA module includes enough digital signal processing (DSP) resources on-board to service eight voice calls using high-complexity codecs or 16 voice calls using medium-complexity codecs (see list of codecs supported in Table 5). In addition, the NM-HDA provides a connector for a daughter module, called DSP-HDA-16, which can serve an additional 8 high-complexity or 16 medium-complexity calls.
A Cisco 2600 and 2800 Series router can house one NM-HDA module, a Cisco 3660 router can house up to six network module while a Cisco 3700 Series router can house up to four network modules.
Your Cisco EM-HDA-4FXO= is ready for immediate shipment the same day you place your order in most cases and every product we sell comes with an industry leading One-Year Warranty. Plus, with our ADC Warranty Shield program we can even offer you a Lifetime Warranty. Our relationship doesn't end when the sale is completed. It's just beginning. Free technical support is available toll free by calling (888)872-5619.
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