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
|
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.
|
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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