COMT 220 1

COMT 220COMT 220

Network Services

COMT 220 2

Definition of “Switched Definition of “Switched Services”Services”

In a switched service at least some portion of the call path is

set up for the duration of the call only.

Everything else is a “Dedicated” or Everything else is a “Dedicated” or “Private” Service“Private” Service

COMT 220 3

Segments of an InterLATA Segments of an InterLATA ServiceService

OriginationOrigination

TerminationTermination

LocalLoop

IXC

LocalLoop

iLEC or cLEC

Access

Access

COMT 220 4

Some ExamplesSome Examples

CPE CPE

A Regular Long-Distance Call

DedicatedSwitched

CPE CPE

“WATS” Service

CO POP

COMT 220 5

Inbound Service (“800”)Inbound Service (“800”)

CPE CPE

Low-Volume 800 Service via Business Lines

DedicatedSwitched

CPE CPE

Typical Call Center

COMT 220 6

Special ServicesSpecial Services

CPE CPE

Foreign Exchange Service

DedicatedSwitched

CPE CPE

Private Lines

COMT 220 7

Switched Access DetailsSwitched Access Details

OriginationOrigination

IXC POPIXC POP

COCO

Dedicated Local LoopMonthly Charge

Per-Call Connection

Usage-Based Access Charge Usage-Charge

by IXC

Database Services

COMT 220 8

““Special” (Dedicated) AccessSpecial” (Dedicated) Access

OriginationOrigination

IXC POPIXC POP

COCO

Dedicated Local LoopMonthly Charge

Dedicated Connection

Monthly Access Charge

Usage-Chargeby IXC

Database Services

COMT 220 9

Types of ServicesTypes of Services

“Dial-1” Long Distance Service– Switched Access, on-demand– Highest per-call cost.

“WATS” (Wide Area Telephone Service)– Switched or Dedicated Access– Contractual Arrangements, Volume Discounts,

Minimum Commitments– Multiple services for different market segments

COMT 220 10

Types of Services cont…Types of Services cont…

“800” & “888” Services– Switched or Dedicated Access– Switched Access uses standard business line– Usually toll-free to the caller

“900” Information Services– Caller pays for information via telephone bill

Note: Other “X00” codes are in use

COMT 220 11

VPNsVPNs

Virtual Network Services– Switched and Dedicated Access– Multi-location service– Company-specific dialing plans– Call re-routing– Specialized announcements and intercepts– Offered through resellers to smaller businesses

COMT 220 12

Service Charge ComputationService Charge Computation

COMT 220 13

V & H CoordinatesV & H Coordinates

V

H

COMT 220 14

V&H Distance ComputationV&H Distance Computation

Athens (V1,H1) = (6011,2354) San Francisco (V2,H2) = (8492,8719)

(V2 - V1) (H2 - H1)2 2+10Dist. =

Distance will come out in miles; must be rounded up

COMT 220 15

V&H Distance ComputationV&H Distance Computation

Athens (V1,H1) = (6011,2354) San Francisco (V2,H2) = (8492,8719)

(8492-6011) (8719-2354)2 2+10Dist. =

Result: 2161 miles

COMT 220 16

ExampleExample

Point of Origin at (5972, 2555)Destination of Call at (7070,2025)

COMT 220 17

ExampleExample

Point of Origin at (5972, 2555)Destination of Call at (7070,2025)

Distance = (7070 - 5972) + (2025 - 2555)

2 2

10

= 386 miles

COMT 220 18

Special Access PricingSpecial Access PricingLEC ChargesLEC Charges

CustomerPremise

POP

CO

CO

LocalDistribution

Channel

LocalDistribution

Channel

Channel MileageChannel Mileage

(2) Channel MileageTerminations

(2) Channel MileageTerminations

COMT 220 19

Special Access PricingSpecial Access PricingIXC ChargesIXC Charges

CustomerPremise

POP

CO

CO

LocalDistribution

Channel

Channel Mileage

(2) Channel MileageTerminations

Access CoordinationCentral Office Connection

Access CoordinationCentral Office Connection

COMT 220 20

Private Line PricingPrivate Line Pricing

POP

CustomerPremise

POP

CustomerPremise

Special Accessto Nearest POP

Special Accessto Nearest POP

Special Accessto Nearest POP

Special Accessto Nearest POP

InterOffice ChannelMileage

InterOffice ChannelMileage

COMT 220 21

Other Billing IssuesOther Billing Issues

Call Duration Rounding Sur-Charges (Operator, Calling Card)Volume DiscountsTerm Commitments