an option

Another option that came to mind.

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Note added at 41 mins (2011-12-20 21:49:55 GMT)
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http://www.tandfonline.com/doi/abs/10.1080/014680398245037#p...
- It is further shown how different networks of arbitrary size can be interconnected to larger all-optical network clusters, thereby providing scalability not only with respect to the number of nodes but also to the ***geographical extension***.

http://ahzo7.blogspot.com/2011_03_01_archive.html
Local area networks (LANs) use a common transmission medium to interconnect workstations, servers, computers, and/or other related assets over a limited geographical area. Several LAN standards specify capability to serve up to a thousand or more devices on a single LAN. The ***geographical extension*** or “local area” may extend no more than several hundred feet (<100 m) to over 6 miles (>10 km) or more in other cases.

Hope it helps


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Note added at 47 mins (2011-12-20 21:56:03 GMT)
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http://www.pts-sis.com/en/equipment/carrier_equipment/sigma/...
"Geographical extension" of the network.

If this is about telecommunications (and the word "Receptores" suggests it might be, then this is your term.

Vodafone currently has 99% population coverage with its mobile network and 95% geographical coverage, together with 70km coverage out to sea around the Irish coast.
http://www.vodafone.ie/aboutus/code/custcare/coverage/

Roaming

Roaming is defined as the ability for a cellular customer to automatically make & receive voice calls, send & receive data, or access other services when travelling outside the geographical coverage area of the home network, by means of using a visited network.
http://www.gsmworld.com/gsmaw/roaming.shtml

Cellular data is the ability to use data services via cellular networks, whereas Data roaming is the ability to use such service while roaming outside the geographical coverage area of the service provider.

Read more: http://www.differencebetween.com/difference-between-data-roa...

In wireless telecommunications, roaming is a general term referring to the extension of connectivity service in a location that is different from the home location where the service was registered. Roaming ensures that the wireless device is kept connected to the network, without losing the connection. The term "roaming" originates from the GSM (Global System for Mobile Communications) sphere; the term "roaming" can also be applied to the CDMA technology.[1] Traditional GSM Roaming is defined (cf. GSM Association Permanent Reference Document AA.39) as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network. This can be done by using a communication terminal or else just by using the subscriber identity in the visited network. Roaming is technically supported by mobility management, authentication, authorization and billing procedures.
http://en.wikipedia.org/wiki/Roaming