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MP-2100M-VC16/FXS and other RAD Megaplex VC-8 and VC-16 modules

The MP-2100M-VC16/FXS and other RAD Megaplex VC-16 modules provide 8 or 16 toll-quality voice channels. Voice signals are digitized using PCM, in compliance with ITU-T G.711 standards, enabling up to 30 voice channels to be transmitted over an E1 link, or 24 voice channels over a T1 link. The high density provided by VC-16 enables a single Megaplex-2100, equipped with 8 x MP-2100M-VC16/FXS or other VC16 modules and 2 x ML-2E1 main link modules, to support up to 120 PCM channels over four E1 links. Alternatively, 120 PCM channels can be supported over five T1 links, using 2 x ML-2T1 and 1 x ML-1T1 main link modules.

The smaller Megaplex-2104 supports up to 60 PCM channels over two E1 links, using 4 x MP-2100M-VC16/FXS or other VC16 modules and a 1 x ML-2E1 modules. Alternatively, 48 channels can be supported over two T1 links using 3 x VC-16 and a 1 x ML-2T1 modules.

Encoding and decoding are in full compliance with ITU-T requirements G.712, G.713 and G.714. Voice channel coding is selectable for A-law or -law. Each 64 kbps PCM voice channel of the MP-2100M-VC16/FXS and other Megaplex VC-16 modules is allocated a timeslot on a link in a DS0 compatible format, permitting voice channel switching in systems based on digital cross-connect (DACS). Each channel can be independently routed to any link. Each VC-8/16 voice channel supports Caller ID by transparently transferring the FSK modem tones between the incoming rings. With this feature, a customer subscribed to a Caller ID service can see the Caller ID of an incoming or waiting call with any Caller ID display equipment. Megaplex VC-8 and VC-16 are available with the following interface types:

E&M interface of the MP-2100M-VC16/E&M support different types of E&M signaling: EIA RS-464 Types I, II, III and V (British Telecom SSDC5). Both 2-wire and 4-wire lines are supported (user-selectable). Typically used for connection of tie lines between PBXs (see Figure 1). 

FXS interface of the RAD MP-2100M-VC16/FXS supports both loop-start and wink-start signaling methods. FXS interfaces are typically used for direct connection to 2-wire telephones in the following loop-start applications:
Off-Premises Extension (OPX), where a local telephone on the PBX can be connected to an off-premises telephone, by dialing only the extension number assigned to the off-premises telephone (see Figure 2);

Private Line, Automatic Ringdown application (PLAR) (also referred to as Hot Line), where two telephones are connected directly via the E1/T1 link. When the telephone on one side goes off-hook, the other telephone rings;

Direct connection to 2-wire telephones in PSTN applications (see Figure 3).

Battery polarity reversal is supported for wink-start signaling, which is used for direct inward dialing (DID) applications. The MP-2100M-VC16/FXS and MP-2100M-VC8/FXS also generate 12/16 kHz metering pulse for connection to public payphones (see Figure 4).

FXO interface of RAD MP-2100M-VC16/FXO and MP-2100M-VC8/FXO support both loop-start and wink-start signaling methods. They can be used for connection to PBX extension lines in point-to-point loop-start applications, opposite a corresponding MP-2100M-VC16/FXS and MP-2100M-VC8/FXS at the remote Megaplex, for connection to the remote extension. Also the MP-2100M-VC16/FXO and MP-2100M-VC8/FXO support battery polarity reversal for wink-start signaling and 12/16 kHz metering pulse detection for public payphones.

Megaplex MP-2100M-VC16/FXS and other RAD MP-2100M-VC8 and MP-2100M-VC16 module data sheet (pdf 308k)


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Other RAD sections of interest:
RAD Accessories, RAD ATM products, RAD Baseband modems and last mile access, RAD Cables & Misc, RAD Digital Service Access Devices ( FCD ), RAD Fiber Optic modems and Converters, RAD IP and Ethernet Access, RAD Kilomux Data, Voice, Fax and LAN integrating Multiplexers, RAD LRS Modem rackRAD MegaplexRAD Networks Management, RAD Optimux Fiber MultiplexersRAD Sharing Devices, RAD Short Range ModemsRAD T1/E1 Digital Cross Connects ( DACS ), RAD T1/E1 Digital Cross Connect (DACS) for single E1 / T1 applications, RAD TDMoIP, RAD Voice Interface Converters, RAD Voice Trunking Gateway

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Last modified: January 17, 2015
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