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Station Interconnect Panel (SIP)
The Station Interconnect Panel (SIP) provides for the connection of the terminals (voice and
data), peripheral equipment, and some auxiliary equipment of the system to station port
CPs. This equipment includes voice terminals, attendant consoles, data terminals, System
Administration Terminal, Digital Tape Unit, and Call Accounting System. The SIP is made
up of 617A Panels and associated adapters.
617A Panel
The 617A Panel (Figure 4-19) is a metal plate with key slot holes on each side for mounting
on a backboard. Each 617A Panel can hold eight Z21OA1 or 858A Adapters, each of which
can accommodate six connections to the port circuits in the cabinets. As many as five 617A
Panels can be required for a maximum size system.
The adapters snap into prepunched
holes on the 617A Panels. (Reattached spacer buttons keep adapters from touching the
metal panels. )
The cable rings located at the top of the 617A Panel route the building wiring cables to the
adapters. Purse lock clips hold the building wiring cables in place. The white posts at the
bottom of the 617A Panel guide the wiring from the 50A Fanning Strip to each column of
adapters.
Preprinted boxes and numbers on the panel identify modular jacks for recordkeeping
purposes. Letters are marked on the boxes at the top of each column by the installer. The
letter (A-J) and the corresponding preprinted row number (l-24) identify the port jacks. For
example, Al identifies the modular jack located in column A row 1.
Adapters
Adapters that mount on the panel connect the following:
● Building wire runs terminated in modular jacks, 25-pair connectors, or unterminated.
● Cables from the system cabinets terminated in modular jacks or 25-pair connectors.
The following adapters can be mounted on the 617A panel:
● Z210A—Six 4-pair modular jacks to six 4-pair modular jacks. One required per six
voice terminals.
Connects to building wiring terminated in modular jacks.
(Equivalent to six Z600A Adapters.)
● 858A—Six 4-pair modular jacks to six 110-type cut-down blocks. One required per
six voice terminals.
Connects to unterminated building wiring. (Equivalent to six
Z601As.)
The SIP equipment is furnished by the installer.
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