Each item of IP Office hardware has a Product Change Status (PCS) level. This is usually included on the label on the hardware prefix with PCS.

The PCS level is increased each time a significant change is made to the components of that piece of hardware. For example the PCS level may increased when a component is replaced by one from a different supplier.

Normally changes to a PCS level are not important and items of the same hardware but with different PCS levels are still identical in operation and can be interchanged. However, there are some exceptions as listed below.

PCS Level Restrictions

•IP500 Analog Trunk Card V1
These cards are support by IP Office Release 4.0 and higher. However, PCS10 and higher cards are only supported in systems running IP Office Release 6.1(20), 7.0(12) or 8.0 and higher. Refer to IP Office Technical Tip 237.

•IP500 ATM4 Combination Card V1
These cards are supported by IP Office Release 6.0 and higher. However, PCS04 and higher cards are only supported in systems running IP Office Release 6.1(20), 7.0(12) or 8.0 and higher. Refer to IP Office Technical Tip 237.

•IP500 V2 Control Unit
To support IP Office Release 9.1 or higher, PCS 14 or lower units must first install Release 8.1(65) (or higher 8.1) or any Release 9.0 and then upgrade to Release 9.1 or higher. Care should be taken to ensure that no calls are made before the final upgrade, otherwise the system will require upgrade license.