Figure F.1

@startuml

skinparam monochrome true

skinparam defaultFontName Arial

skinparam classFontSize 10

skinparam sequenceBoxBorderColor #black

participant "**Host A**\nCRON Service Gate" as hosta_cron 

participant "**Host A**\nAdministration Gate" as hosta_adm

participant "**SSP Host**\nAdministration Gate" as hostb_adm

participant "**SSP Host**\nCRON Application Gate" as hostb_cron 

autonumber

...**Notation:**  Gate Identifier : Pipe Session Open on [P<sub>IN</sub>,P<sub>OUT</sub>]...

hostb_adm->hosta_adm:EVT_ADM_BIND [**CRON_CTR,P<sub>20</sub>**]

hosta_adm->hostb_adm:EVT_ADM_BIND [**CRON_CTR,P<sub>10</sub>**] 

note right : Pipe Session Open on [P<sub>20</sub>,P<sub>10</sub>]

note left : Pipe Session Open on [P<sub>10</sub>,P<sub>20</sub>]

...

hostb_cron->hosta_cron: CRON-REQUEST-TIMER-Command [Parameters...] on P<sub>10</sub>

activate hosta_cron

activate hostb_cron

hosta_cron-->hostb_cron: eCRON-OK [CTX_ID<sub>0001</sub>] on P<sub>20</sub> 

deactivate hostb_cron

deactivate hosta_cron

...

hosta_cron->hostb_cron:CRON-ELAPSED-TIMER-Event

note left :Notification at a given date and time

...

opt

loop

hosta_cron->hostb_cron:CRON-ELAPSED-TIMER-Event

note left :Notification at a given date and time

...

end

end

...

hostb_cron->hosta_cron: CRON-KILL-TIMER-Command [CTX_ID<sub>0001</sub>] on P<sub>10</sub>

activate hosta_cron

activate hostb_cron

hosta_cron-->hostb_cron: eCRON-OK on P<sub>20</sub>

deactivate hostb_cron

deactivate hosta_cron

@enduml