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PDH Transmission Systems

The line of data and transmission systems that Revenga Ingenieros offers its customers (SDH DWDM, SWITCHING, FTTX, W-LAN, etc.) includes PDH transmission systems and their wide variety of low-speed audio and data interfaces. For some of our customers, we use products that have been on the market for a long time and that we trust entirely. In these cases, Revenga provides the engineering and design, installation, integration with other systems, commissioning, and post-sale technical support. Some of our recent large projects include: AENA o Land-land communications in the Asturias and A Coruña airports with fiber-optic transmission and HDSL copper backup line.

Figure 1. Initial solution proposed for A Coruña o Land-land communications in the civil-military airport in Albacete. Communications via optical fiber and maintenance alarm management via SNMP.

Figure 2. Main screen of the alarm management development by Revenga Ingenieros on an SNMP platform.

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VELEZ-MALAGA TRAMWAY o Voice communications in the central control station and at stops for telephone and intercom service, audio communications for the public-address system and low-speed data communications for different systems. Fiber optic interfaces in all equipment. Double-ring configuration.

Figure 3. SDH and PDH equipment in control station

NODE 3 SDH-PDH 2 SINGLE-MODE O.F. 1310NM

NODE 4 SDH-PDH

NODE X SDH-PDH

BACKUP E1 RING

ELECTRICAL INTERFACES

BACKUP E1 RING PDH UNIT (Megaplex 2100/2104) STM-1 PROTECTION RING

NODE 1 SDH-PDH

NODE 2 SDH-PDH

PDH UNIT (Optix Metro 1050)

STM-1 ACTIVE RING

Figure 4. Main architecture

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Expansion of the aforementioned services at three new stops.

MADRID CITY HALL o Low-speed signal transport system for regulation centers and communications between the old Plaza de la Villa control station and the new Mobility Management Center at Julián Camarillo. Fiber-optic interfaces.

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FEVE o Communications system on quads for several stations on one of the FEVE lines with no resources or infrastructure other than copper.

Revenga Ingenieros, S.A. Quality and Environmental management systems are certified by AENOR under the following certification numbers: Quality: ER-0074/1995 Environment: GA-2001/0327

Head Office: C/ Fragua, 6 ­ 28760 Tres Cantos (Madid) Tfno. (34) 91 8061810 Fax (34) 91 8041955 e-mail: [email protected]

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