The following numbers should not be assigned within a domain because they are reserved for system functions.
|00-99||Reserved for internal use|
|988||National Suicide Hotline|
|700-799||Used for Dynamic Call Parking Queues|
|900-999||Reserved due to 911 system feature|
|5000/9900||Unregistered Login to VMail (prompted for acct no and password)|
|5002/9902||Hot Desking Sign In|
|7000-7999||These are unusable as extension numbers because they conflict with the 7+extension rule to transfer a call directly to voicemail|
|9999||Hot Desk/Hoteling Deactivate|
Refer to the following table for assigning users or handling call routing.
|Best Practice Dial Plan|
Although there is not a set method that must be adhered to for special extensions, we generally recommend the following groups for ease and convenience. This also aids in faster troubleshooting scenarios.
|Recommendation for Special Extensions|
|9401-9499||Call Routing Users|
(Cell Phones, Fax Users, VM Box)
If you have any questions as it relates to the number space within Prysm Voice then please reach out to our support team.