
PART TWO - STANDARD FEATURES
001-0131B October 1997 Page 10
2.5.3.1 How many of these analog trunks will be 2-wire?
none
1-2
3-4
5-6
7-8
9-10
11-12
13-14
15-16
17-18
19-20
21-22
23-24
25-26
27-28
29-30
31-32
33-34
35-36
37-38
39-40
41-42
43-44
45-46
47-48
49-50
51-52
53-54
55-56
57-58
The
2 wire trunks
can provide interfacing and supervision for the following:
Central office DID selector-level, wink and immediate start
PABX 2-wire trunk
End-to-End loop start ring and overdial
E&M Type I 2-wire Audio
Local operator telephone
End-to-End ground start and overdial
A Dual Telco Interface Card can support a different type of telco interface on each of its two telco trunk
interfaces. Each 2 wire analog telco card (950-9822) supports two telco trunks. To calculate the number
of cards needed, order the half the number of 2-wire telco trunks specified above. If you are configuring a
system that will not be required to support all the subscribers upon initial installation, you may choose to
order less Dual Telco trunk cards initially to save cost, and plan on adding them later as the system
grows.
2.5.3.2 How many of these analog trunks will be 4-wire audio?
none
1-2
3-4
5-6
7-8
9-10
11-12
13-14
15-16
17-18
19-20
21-22
23-24
25-26
27-28
29-30
31-32
33-34
35-36
37-38
39-40
41-42
43-44
45-46
47-48
49-50
51-52
53-54
55-56
57-58
The
4 wire audio trunks
can provide interfacing and supervision for the following:
E&M Type 2 4-wire Audio
Interface to Zetron Model 810 Digital Hybrid
for DID and end-to-end lines connected to mobile equipment
Each 4-wire analog telco card (702-9318) supports two telco trunks. To calculate the number of cards
needed, order the half the number of 4-wire telco trunks specified above. If you are configuring a system
that will not be required to support all the subscribers upon initial installation, you may choose to order
less Dual Telco trunk cards initially to save cost, and plan on adding them later as the system grows.
2.5.3.3 Analog Telco Port Options
2.5.3.3.1 Do you need to support rotary telephones for numeric display message entry?
yes
no
The Dual Dial Click Decoder option enables the Dual Telco Card to decode the pulses generated by
rotary telephones. This option will allow rotary telephones to be used for pager ID number overdial and
numeric message entry. This is typically done on lines from the phone company that accept calls from
rotary phones in places where DTMF phones are rare.
Note: The viability of dial click decoding depends
on the type of telco central offices serving each of the callers and the paging terminal. Consult Zetron for
specific applications and if desired, then order
one Dual-Dial Click Decoder (950-9933) option for each
Dual-Telco card ordered above in section 2.5.3.1 or 2.5.3.2 that will support dial-click decoding.
If you are using the dial-click decoder, you may want to consider having a phone manned by an operator
to assist customers if the dial-clicks from the originating telephone are not always passed through the
phone company switch or the originating phones do not all produce audible clicks. The paging terminal
can automatically forward calls to this phone when the customer overdials a pager number that does not
exist, or dials nothing at all. If this operator telephone is desired, order the -B42 Pathfinder option.
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