10.2.10.1. General Restrictions and Limitations 
- SPS trunk groups must be configured for payload separation without intercept parameters.
- Transfer busy is not possible over SPS.
- Route optimization is not possible.
- Direct tie trunk access if the trunk is located in a different shelf is not possible. Workaround: Use AMO TWABE or activate the Block Dial feature.
- Attendant scenarios are not supported.
- Only ComAssistant basic scenarios are supported. Other applications using ACL (through CAP/CA4000) are not supported.
- Payload survivability ALR with single number and PUBDID are not supported.
- Virtual Numbering (VNR) is not supported.
- US specific scenarios are not supported.
- Direct station selection (DSS)
- Override/Intercept
- Camp on
- Only local announcements are supported; announcements are not routed via ISDN (due to CO resource usage).
- MLPP is not suported - MLPP calls over payload separation are not possible.
- Chese - Secretary and Executive must be located on the same branch.
- Broadcast, Speaker Call - One-Way - All party's must be located on the same branch.
- ACD agents must be located on the same branch.
- PARK - Must not be used on different branches
- SIP Phones are not supported.
- Hunt group Master which is also a UC member cannot be reached via ALR path.
- ISDN, ANATE - only basic call is supported.
- UC and UnifyPhone applications not supported with SPS