Instruction manual

HARDWARE DESCRIPTION
Peripheral Equipment
Peripheral Equipment includes the following devices that connect to the call processing
portion of the CPU/MEM (ZTN130) CP:
● System Administration Terminal (SAT); refer to “System Administration” in Section 2.
● Digital Tape Unit (DTU); refer to “Digital Tape Unit” in Section 2.
● Station Message Detail Recording (SMDR) printer or Call Accounting System (CAS);
refer to “Station Message Detail Recording” or “Call Accounting System” in Section
2.
Auxiliary Equipment
Auxiliary equipment supports System 25 features and services. The following equipment is
supported:
● Dictation Equipment; refer to “Dictation System Access” in Section 2.
● External Alerting Equipment; refer to “External Alerts” in Section 2.
● Music Source (Music-On-Hold); refer to “Music-On-Hold” in Section 2.
● Paging Equipment; refer to
“Paging System Access” in Section 2.
● Recorded Delay Announcement Equipment; refer to “Direct Group Calling Delay
Announcement” and “Night Service Delay Announcements” in Section 2.
● Optional Power Equipment.
Note 1:
Auxiliary equipment connected to the ZTN78 Tip Ring Line CP must meet
the following requirements:
— AC impedance: 600 ohms
— DC current less than 30 ma at 24 V dc
— Ringer Equivalent Number (REN) less than 1.15
— Distance must not exceed 2000 feet
Note 2:
Off-premises auxiliary equipment must be connected to the TN742 Analog
Line CP. If the auxiliary equipment requires a contact closure, the TN763
Auxiliary Trunk CP must be used (on-premises service only).
4-60