 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
DEFINITY Made Easy Tools
Issue 2, November 2000
System 75 XE to R8si (Blowback)
Upgrade overview: System 75 XE
When you upgrade a System 75 XE, consider the following:
- Many configurations of System 75 XEs are in the field.
- Each system can have a unique hardware and software configuration.
- How you upgrade a system depends on its present configuration.
- To upgrade a System 75 XE, you replace the control cabinet with either:
- An R7si/R8si enhanced control cabinet for a PPN upgrade
- An expansion control cabinet for an EPN upgrade
- For an upgrade to a duplicated R7si or R8si PPN, you also add an enhanced duplicated control cabinet.
Relocating PPN port circuit packs
When you upgrade a System 75 XE:
- You can need to move and manually retranslate port circuit packs from the control cabinet.
- You replace the System 75 XE control cabinet with 14 port slots with an R7si/R8si enhanced control cabinet with 16 port slots. This provides 2 extra port slots.
- However, out of these 16 port slots, nonport-related (control and service) circuit packs may need to occupy certain slots:
- If you are replacing the TN756 tone detector/generator in the System 75 XE control cabinet, use a new TN2182 tone-clock. The TN2182 replaces the tone-detector circuits on the TN756.
- If you simultaneously add an EPN, you must install a TN776 or TN570 expansion interface circuit pack in slot 1 of the new R7si enhanced control cabinet.
- If the control cabinet in the System 75 XE holds a TN755 power supply in slot 13 or 14, this circuit pack is relocated to port slots 15 or 16 of the new R7si/R8si enhanced control cabinet (with no effect on available port circuits).
- If you have all of the above scenarios, the result is neither a gain nor a loss of port slots.
Relocating EPN port circuit packs
When you upgrade a System 75 XE to an R7si or R8si EPN:
You can need to move and manually retranslate port circuit packs.
- An R7si/R8si expansion control cabinet with 17 port slots replaces the System 75 XE control cabinet with 14 port slots. This provides 3 extra port slots.
- However, out of these 17 port slots, nonport-related (control and service) circuit packs may need to occupy certain slots:
- For an EPN upgrade, you must have a TN768, TN780, or TN2182 tone-clock or a TN756 tone detector/generator in the System 75 XE control cabinet. If you have a TN768 or TN780, you need to add a TN748 tone detector.
- A TN776 or TN570 must be installed in slot 1 of the new R7si expansion control cabinet to interconnect the upgraded R7si EPN with the new PPN. Therefore, you must relocate any circuit pack residing in slot 1 of the System 75 XE control cabinet (usually to one of the extra port slots in the new expansion control cabinet).
- If the control cabinet in the System 75 XE holds a TN755 power supply in slot 13 or 14, this circuit pack is relocated to port slots 16 or 17 of the new R7si or R8si expansion control cabinet (with no effect on available port circuits).
- If you have all of the above scenarios, the result is a net gain of only 1 port slot.
|
|
|
|
|
|
|
|
|
|
| Copyright� 2000 Avaya Inc |
| Send comments to MadeEasy Development Team |
| Always check at the Made Easy Web site for the most current information. |