https://www.zabbix.com/documentation/2.2/manual/config/items/itemtypes/telnet_checks says that telnet prompt should end with one of :

• $
• #
• >
• %

agent and simple check pages say that telnet prompt should end with :

• :

these are quite different, thus either they should be unified in the code and docs updated, or, if already identical, documentation should be updated