We used to have an Avaya Definity. This system was actually 2 for redundancy. The 2 systems were called 'SPE A' and 'SPE B'. Definity had the ability to manually switch services from 'SPE A' to 'SPE B' and visa-versa. This was nice because if we needed to perform maintenance on 'SPE A', all we needed to do was switch the services over the the other SPE.
My question is: Can you manually switch services from Publisher to Subscriber and visa-versa in a CallManager 4.1(3) environment.