UK Area Code information for Castle Douglas

Castle Douglas Area Code Allocation

Ofcom has allocated the 01556 area code to service Castle Douglas and the surrounding area on at least 1 exchange.

Castle Douglas Exchange Information

Castle Douglas WSCAS

The Castle Douglas exchange has 223 commercial and 2,212 domestic properties.
Adsl Max
Wbc Fixed Rate
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Fixed Rate
Some postcodes covered by this exange include;
DG7 1AP
DG5 4NT
DG5 4YB
DG5 4YL
DG7 1JB
DG7 1YE
DG7 9AD
DG7 1YH
DG7 3US
DG7 3WX
DG7 3YT
DG7 3YL
DG7 3WT
DG7 3WU
DG7 3WW
DG7 2WA
DG7 2YF
DG7 2YL
DG7 3PQ
DG7 2YH
DG7 2YD
DG7 1NE
DG7 1WA
DG7 1WW
DG7 1WX
DG5 4WA
DG7 9AE
DG7 9AB
DG7 1AD
DG7 1AR
DG7 1LZ
DG7 1AG
DG7 1LU
DG7 1AQ
DG7 1AE
DG7 1AF
DG7 1ED
DG7 1AW
DG7 1AN
DG7 1EB
DG7 1AS
DG7 1NB
DG7 1AT
DG7 1BE
DG7 1NA
DG7 1EG
DG7 1AB
DG7 1AH
DG7 1HR
DG7 1BF

Broadband Connectivity Type Definitions

Different telephone exchanges have different broadband connectivity depending on their geographic location, the consumers they serve (demand and composition of those consumers) and the competative landscape in that locale. As a result there is a mix of services and related performance which BT classify as follows;

Fixed Rate

There for three fixed rate lines; 512Kbps, 1Mbps and 2Mbps. As with IPStream 500, 1000 and 2000, these have an upstream capped at 288Kbps. Note that all of the other WBC products apart from these are strictly rate adaptive (like ADSL Max).

WBC Fixed Rate

Wholesale Broadband Connect (WBC) offers high-speed, high-performance broadband services.

ADSL Max

BT's original ADSL2+ wholesale product with an option of an upstream cap at 448Kbps or no cap at all. ADSL2+ can achieve up to 1Mbps upstream.

WBC ADSL 2+

ADSL2+ (also known as 21CN (21st Century Network) and WBC (Wholesale Broadband Connect) is a high speed broadband service which offers download speeds of up to 24Mbs and upload speeds of up to 1Mbs.

WBC ADSL 2+ Annex M

ADSL2+ Annex M offers up to 2.5Mbps upstream in the UK. This product is used by many businesses who could previously only find this level of upstream bandwidth with SDSL. Note that there is no option for a capped upstream with this product.

FTTC Range A (Clean)

FTTC Range A is a range where the circuits are deemed to be free of any copper line faults, and any local wiring issues (in a customer's premises). This range is often very wide for both upload and download, and does beg the question of why a copper line fault may exist without being fixed.

FTTC Range B (Impacted)

FTTC Range B is a range where circuits may have copper faults and/or internal wiring issues at a customer's site. The term impacted could be useful, as sometimes crosstalk is mentioned as something that impacts on line speeds, but there is no official word from BT on whether either Range A or Range B take into account the effects of crosstalk.

FTTP On Demand

Fiber to the home (FTTH), also called "fiber to the premises" (FTTP), is the installation and use of optical fiber from a central point directly to individual buildings such as residences, apartment buildings and businesses to provide unprecedented high-speed Internet access. FTTH dramatically increases the connection speeds available to computer users compared with technologies now used in most places.