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TABLE 4-C. Summary of Voice Terminals
TERMINAL
CIRCUIT PACK
TYPE * MODEL
DESCRIPTION INTERFACE
420
Memory Set W/Built-In Speakerphone
500MM
Rotary Desk Set
ZTN78
Single-Line
500SM
Rotary Set Compatible
Tip Ring
with 4A Speakerphone
TN742
(Analog)
554BMPA
Rotary Wall Set
†
2500MMGB
Basic Touch-Tone Desk Set
2500DMGC
Basic Desk with Message Waiting
2500SM
Basic Desk Compatible
with 4A Speakerphone
2514 BMW
Basic Desk with Headset Jack
2554BM
Basic Wall
7101A
Desk or Wall
7302H01D 5-Button
ZTN79
MERLIN
7303H01D
10-Button
Multiline
7305H01D
34-Button
7300H Series
7305H02D
34-Button Deluxe
(Hybrid)
7305H03B
BIS Set (Built-In Speakerphone)
7305H04C
BIS Set with Display
7309H01B
HFAI Set (Hands-Free-Answer
on Intercom)
MET
‡
2991C05
10-Button (Desk)
TN735
Multiline
2991D05
10-Button (Wall)
(Hybrid)
2993C04
10-Button with BIS
7302M
12-Button (Desk)
* System 25 supports several voice terminals that are no longer orderable. These
include MET sets and the 34-button (basic) MERLIN set.
† The system supports equivalent industry standard touch-tone single-line sets. Voice
terminals connected via the ZTN78 Tip Ring Line CP must have a REN less than or
equal to 1.20 A/B.
‡ The 2991C04 set [with Busy Lamp Field (BLF)] will not operate with System 25
unless specially modified.
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