Cable Forum - View Single Post

gazzae · 12-03-2004, 16:34

Incompatible Services
You may not be able to use an existing line for a ADSL service if one or more of the following BT-supplied services are already installed on it:

PBX (Private Exchange)
A system where your telephone line is connected to a switchboard or switching unit, or where multiple phone numbers are routed through a single line. If you have to dial a number or press a key before dialling an outside line, or your company has a reception desk and extension telephones, you will probably have a PBX system. In this case, a direct line would be needed, such as may already be installed for the company fax machine to receive inbound calls. ADSL can be used on an existing fax or modem line provided the line satisfies the other ADSL requirements.

Auxiliary line
Similar in concept to PBX, this service enables a call to be routed to the next available incoming telephone. Not often used and has been mainly replaced by the PBX-based Direct Dial Inward (DDI) service.

DDI
If your line offers DDI this indicates that it is an extension from a PBX and so is incompatible with ADSL (see above).

BT DataStream
If a telephone line is already being used to deliver a BT digital data service it cannot also be used for ADSL.

BT VideoStream
VideoStream is a version of DSL specifically designed to carry video signals (eg television pictures). If a telephone is already being used to carry one form of DSL it cannot be used to carry another at the same time, and so would not be suitable for ADSL.

Leased Line/Private Circuit
A high-speed direct digital link provided by BT. If a telephone line is already being used to deliver a BT digital data service it cannot also be used for ADSL.

Red ABC/RedCare
Both are a type of alarm monitoring service. If your alarm sounds (fire, burglar etc) a signal is sent to a monitoring centre who then contact the Police. The presence of this signal would interfere with ADSL and so ADSL cannot be used on a line with this service.

30K Loop/Out Of Area line
This is a service which enables a customer to move their telephone line to a new area, even if this is outside the range served by their original area code. For example, taking your 01438 number to the 01462 dialling code. In this case, the line length would be too long for ADSL to function.

Featurenet 5000
A virtual telephone management system operated by BT for very large organisations who require more flexibility and control over their telephone systems.

Subscriber Metering Line/Meter Pulses
A facility which allows a customer to monitor their call charges and time spent on the phone through a specially fitted meter which responds to pulses sent down the line from the exchange. These pulses would interfere with the operation of ADSL and so ADSL cannot be used on a line with one of these services.

12-03-2004, 16:34	#3
gazzae Inactive Join Date: Jun 2003 Location: Belfast Age: 46 Posts: 4,594	Re: I need some advice... Incompatible Services You may not be able to use an existing line for a ADSL service if one or more of the following BT-supplied services are already installed on it: PBX (Private Exchange) A system where your telephone line is connected to a switchboard or switching unit, or where multiple phone numbers are routed through a single line. If you have to dial a number or press a key before dialling an outside line, or your company has a reception desk and extension telephones, you will probably have a PBX system. In this case, a direct line would be needed, such as may already be installed for the company fax machine to receive inbound calls. ADSL can be used on an existing fax or modem line provided the line satisfies the other ADSL requirements. Auxiliary line Similar in concept to PBX, this service enables a call to be routed to the next available incoming telephone. Not often used and has been mainly replaced by the PBX-based Direct Dial Inward (DDI) service. DDI If your line offers DDI this indicates that it is an extension from a PBX and so is incompatible with ADSL (see above). BT DataStream If a telephone line is already being used to deliver a BT digital data service it cannot also be used for ADSL. BT VideoStream VideoStream is a version of DSL specifically designed to carry video signals (eg television pictures). If a telephone is already being used to carry one form of DSL it cannot be used to carry another at the same time, and so would not be suitable for ADSL. Leased Line/Private Circuit A high-speed direct digital link provided by BT. If a telephone line is already being used to deliver a BT digital data service it cannot also be used for ADSL. Red ABC/RedCare Both are a type of alarm monitoring service. If your alarm sounds (fire, burglar etc) a signal is sent to a monitoring centre who then contact the Police. The presence of this signal would interfere with ADSL and so ADSL cannot be used on a line with this service. 30K Loop/Out Of Area line This is a service which enables a customer to move their telephone line to a new area, even if this is outside the range served by their original area code. For example, taking your 01438 number to the 01462 dialling code. In this case, the line length would be too long for ADSL to function. Featurenet 5000 A virtual telephone management system operated by BT for very large organisations who require more flexibility and control over their telephone systems. Subscriber Metering Line/Meter Pulses A facility which allows a customer to monitor their call charges and time spent on the phone through a specially fitted meter which responds to pulses sent down the line from the exchange. These pulses would interfere with the operation of ADSL and so ADSL cannot be used on a line with one of these services.