Endto End T1 Links

Illustrated in Figure 13-15 and Table 13-3 is a typical end-to-end T1 link carrying both voice and data traffic between two end nodes.

Figure 13-15. Long-Haul Dedicated T1 Link Between KimCo and BicAislNet

Figure 13-15. Long-Haul Dedicated T1 Link Between KimCo and BicAislNet

KirtiCo BieAiiiNet

Key West, FL London, UK

KirtiCo BieAiiiNet

Key West, FL London, UK

Table 13-3. Documentation Between KimCo and BicAislNet

T1 Carrier

Global Crossing

IXC Circuit ID

Site A

KimCo

Site B

BicAislNet

Site A LEC ID

Site B LEC ID

T1 Framing (SF/ESF)

ESF T1 Line Coding (AMI/B8ZS)

B8ZS

Channel Number

Service

Site A In-House Termination Point

Site B In-House Termination Point

Comments

1

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

2

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

3

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

4

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

5

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

6

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

7

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

8

Voice

3rd Floor PBX

Basement SWX

Interoff

ce Tie Line

9 to 20

OPEN

21

256 K LAN

7th Floor IT

3rd Floor IT

Channels 21 to 24 are providing a 256 K LAN interconnect link

23

256 K LAN

24

256 K LAN

22

256 K LAN

Some T1 channel service units (CSUs), or Multiplexers (Muxes), allow the end user to map channels to different timeslots on the DTE, or equipment, side of the device. For instance, in the previous example, KimCo could have voice services provisioned on channels 1 to 8. BicAislNet could map those channels to different timeslots on the DTE side of the T1 CSU/Mux. In these cases, the significance of proper documentation by both parties cannot be stressed enough.

Tables 13-4 and 13-5 provide a guide for these scenarios.

Table 13-4. Template for DTE Mapped T1 Links

T1 Carrier

IXC Circuit ID

Site A

Site B

Site A LEC ID

Site B LEC ID

T1 Framing (SF/ESF)

T1 Line Coding (AMI/B8ZS)

Channel

Number

Service

Site A In-House Termination Point

Site B In-House Termination Point

Comments

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Table 13-5. Long-Haul Dedicated T1 Link Documentation Template

T1 Carrier

IXC Circuit ID

Site A

c

>ite B

Site A LEC ID

S

>ite B LEC ID

T1 Framing (SF/ESF)

T1 Line Coding (AMI/B8ZS)

Channel Number

Service Site A In-House S

>ite B In-House

Comments

Termination Point

Termination Point

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

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