INTERCONNECT CIRCUIT CHARGING
Interconnect Circuits – In Span Interconnect (ISI)
1.
Schedules
Standard Interconnect Agreement (SIA)
Schedule 01 – ISI, Third Party ISI and IEC’s
2.
Carrier Price List Sections
Section B2.02.1 of the Carrier Price List (CPL) for BT Charges
Section B2.02.2 of the Carrier Price List (CPL) for Operator Charges
3.
See Also
Carrier Services Billing Manual
4.
Description
In-Span Interconnect (ISI) provides you with the ability to offer PSTN (Public
Switch Telephone Network) telephony and data services to your customers,
by providing the physical access and 2Mbit/s connection to a BT exchange.
You can then benefit from Call Origination and Call Termination on BTs PSTN
network.
5.
Commercial/Regulatory
ISI Interconnect Circuits are a regulatory product offered to other
Communication Providers (CPs) and require a 90 day notification for a price
change.
6.
Network
Operational costs are kept low as infrastructure is built collaboratively.
Equipment is installed by yourself at your premises, which interconnects at an
agreed Point of Connection (PoC) in the public highway. Therefore you
require the necessary permits and expertise to work in the public highway.
If the PoC is within 100m of the BT building no charges apply. If however you
wish to nominate an alternative PoC, separate charges are applicable. This
option is called Nominated ISI.
Various options for ISI delivery are available. Separate charges apply for
these options:

Nominated ISI

Path Protection
To complete your ISI interconnection, 2Mbit/s Intra-Building Circuits (IBCs)
are required at the BT exchange. This provides connectivity from the ISI
equipment to the BT switch. Separate charges will apply for the IBC.
7.
Product Schematic
See Appendix 1.
8.
How Is The Product Invoiced
Interconnect Circuits are priced under the Network Charge Control (NCC)
regime within the Interconnect Specific basket of the NCC whereby the basket
has to comply with an overall RPI-x% per annum price cap (where “x” is the
controlling percentage).
ISI Interconnect is invoiced in advance based on circuit volumes at the start of
the period. Adjustments are applied to each invoice to ensure all circuit
changes (provisions, ceases & rearrangements) during the previous period
are accurately invoiced.
ISI Connection and Rental
(per km per 2
Mbit p.a)
Rental – per km
(per 2 Mbit p.a)
Rental - fixed
Connection
Charge
(per 2 Mbit)
Standard ISI Interconnection will involve the connection and rental of an InSpan Interconnect (ISI) Link and an Intra-Building Circuit (IBC)
In-Span Interconnect (ISI)
Intra Building Circuit (IBC)
Y
Y
Separate charges apply for other ISI options and, in addition these may have
associated setup/conversion charges.
Nominated ISI
Path Protection
Y*
Y**
Y**
Y**
*Nominated ISI rental is based per 100m p.a. per system
**Path Protection connection & rental is based on technology & bandwidth
Circuit Rearrangements
Circuit rearrangements attract individual per rearrangement charges (per
IBC).
Connection Charge Rebate
Depending on the age of a circuit being ceased it may qualify for a proportion
of the original connection charge paid to be rebated.
9.
What Do You See
Invoices are prepared and despatched at the beginning of each period. An
example ISI invoice can be found from the SIMPLE menu.
Two invoicing options are available:
 For those customers wishing to receive a full invoice, it will
consist of a summary sheet together with a breakdown of each
circuit and how it is being charged. These are despatched by
post.
 Alternatively, if a customer wishes the data in electronic format,
the summary sheet is despatched by post and an MS Excel file
that provides the circuit breakdown is sent via e-mail.
See Appendix 2 for a summary of debit and credit items that may be found on
an ISI invoice.
Appendix 1: ISI Interconnect - Schematic
In-Span Interconnect
BT Provided
Infrastructure
DDF
Digital Distribution Frame
IBC
Intra-Building Circuit
ISI
In-Span Interconnect
LTE
Line Terminating Equipment
MUX
Multiplexer
POC
Point of Connection
Connection
Rental
ISI
No
No*
IBC
Yes
Yes
* Additional charges apply
for Nominated ISI option.
Path Protection and Nominated ISI
options are also available.
IBC
SWITCH
LTE
ISI
Charges for ISI :–
See CPL Section B2.02.1
DDF
BT
POC
LTE
MUX
DDF
SWITCH
CP
MUX
CP Provided Infrastructure
Appendix 2: ISI Interconnect – Invoice Elements
ISI Invoice (with or without IECs)
Payment
CP
BT
ISI & *IBC
IEC & *IBC
Invoice
An invoice for
an ISI CP may
contain
Type
Description
Debit
New Connections
*Only one IBC is charged per circuit
Due connections for circuits provided in previous period
Credit Connection Charge Cease Rebate
If applicable (based on age of circuit)
Debit
New Rentals
Due rentals for circuits provided in previous period
Debit
Ongoing Rentals
Circuits at start of current period
Credit Ceased Rentals
Circuits ceased in previous period
Debit
Rearrangements completed in previous period
Rearrangements
•Path Protection Connection/Setup charges ??
•Path Protection Rental charges are billed outside standard billing cycle
•Nominated ISI Rental charges are billed outside standard billing cycle