Figure G.5

@startuml

skinparam monochrome true

skinparam defaultFontName Arial

skinparam classFontSize 10

skinparam sequenceBoxBorderColor #black

participant "**SSP Host**\nFS Control Service Gate" as hosta_fs_ctr 

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

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

participant "**Other Host**\nFS Control Application Gate" as hostb_fs_ctr 

autonumber

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

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

hosta_adm->hostb_adm:EVT_ADM_BIND [**FS_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_fs_ctr->hosta_fs_ctr: FS-OP-FILE-OPEN-Service-Command [Parameters] on P<sub>10</sub>

activate hosta_fs_ctr

activate hostb_fs_ctr

hosta_fs_ctr-->hostb_fs_ctr: eFS-OK [FS_ID<sub>0001</sub>] on P<sub>20</sub> 

deactivate hostb_fs_ctr

deactivate hosta_fs_ctr

hostb_fs_ctr->hosta_fs_ctr: FS-OP-FILE-GET-POSITION-Service-Command [FS_ID<sub>0001</sub>,Parameters...] on P<sub>10</sub>

activate hosta_fs_ctr

activate hostb_fs_ctr

hosta_fs_ctr-->hostb_fs_ctr: eFS-OK [aCurrentOffset] on P<sub>20</sub> 

deactivate hostb_fs_ctr

deactivate hosta_fs_ctr

...

hostb_fs_ctr->hosta_fs_ctr: FS-OP-FILE-READ-Service-Command [FS_ID<sub>0001</sub>,Parameters...] on P<sub>10</sub>

activate hosta_fs_ctr

activate hostb_fs_ctr

hosta_fs_ctr-->hostb_fs_ctr: eFS-OK on P<sub>20</sub> 

deactivate hostb_fs_ctr

deactivate hosta_fs_ctr

...

hostb_fs_ctr->hosta_fs_ctr: FS-OP-FILE-CLOSE-Service-Command[FS_ID<sub>0001</sub>] on P<sub>10</sub>

activate hosta_fs_ctr

activate hostb_fs_ctr

hosta_fs_ctr-->hostb_fs_ctr: eFS-OK on P<sub>20</sub> 

deactivate hostb_fs_ctr

deactivate hosta_fs_ctr

@enduml