Code of Federal Regulations Title 7. Agriculture § 7.1755.522—Specification for Digital, Stored Program Controlled Central Office Equipment Detailed Requirements (Host)

Current as of January 02, 2025 | Updated by Findlaw Staff

(Information To Be Supplied by Owner)

Telephone Company Name

Location

Central Office Name (By Location)

Town

County

State

____Attended

____Unattended

____Remotes

1. General

1.1 Notwithstanding the bidder's equipment lists, the equipment and materials furnished by the bidder must meet the requirements of paragraphs (a) through (x), Appendix A and Appendix B of § 1755.522.

1.2Paragraphs (a) through (x) of § 1755.522 cover the minimum general requirements for digital, stored program controlled central office switching equipment.

1.3Paragraph (y) of § 1755.522 covers requirements for installation, inspection, and testing when such service is included as part of the contract.

1.4Appendices A and B of § 1755.522 cover the technical data for application engineering and detailed equipment requirements insofar as they can be established by the owner. These appendices are to be filled in by the owner.

1.5Appendix C of § 1755.522 covers detailed information on the switching network equipment and the common control equipment, and information as to system reliability and heavy traffic delays as proposed by the bidder. This appendix is to be filled in by the bidder and must be presented with the bid.

1.6Appendix D of § 1755.522 is the single-point grounding system audit checklist.

2. Numbering Scheme

2.1 This office shall be arranged to serve the following area and office code(s):

If more than one code is to be served, discrimination shall be determined by the following:

Number Translation __

Separate Trunk Groups __

Both (Explain in Item 16, Appendix A) __

2.2 This office shall be arranged to provide EAS service to the following:

Connecting office	Code	Connecting office	Code

2.2.1 Seven digits shall be dialed for all local and EAS calls.

2.3 Additional dialing procedures to be provided include the following:

Feature	Required
Station Paid Toll (Including Coin):
Home Numbering Plan Area (HNPA):
“1” + 7 Digits	_______
“1” + 10 Digits	_______
Other (Explain in Item 16, Appendix A)	_______
Foreign Numbering Plan Area (FNPA):
“1” + 10 Digits	_______
Other (Explain in Item 16, Appendix A)	_______

10XXX Dialing to Interexchange Carriers:

Name	Access code
___________________________________________________________________________________________________
___________________________________________________________________________________________________
___________________________________________________________________________________________________
___________________________________________________________________________________________________

Feature	Required
Person, Special (Including Coin):
HNPA—“0” + 7 Digits
“0” + 10 Digits
FNPA “0” + 10 Digits
Other (Explain in Item 16, Appendix A)
Directory Assistance:
HNPA Local—411
“1” + 411
HNPA Toll “1” + 555-1212
FNPA Toll “1” + NPA + 555-1212
IDDD:
Operator Serviced 01
Station-Station 011

Other service codes	No. to be dialed
Wire Chief
Repair Service
Business Office
Emergency Calls to 911 Lines
Emergency Calls to 911 Trunks
Time
Weather
100 Test Line
102 Test Line
105 Test Line
Other (Explain in Item 16, Appendix A)

2.4 Assistance calls are answered: (Check appropriate items)

2.4.1 At the operator office in ________

2.4.1.1 By means of the regular interoffice toll trunks ____

2.4.1.2 By means of the regular interoffice EAS trunks ____

2.4.1.3 By means of a separate special service trunk group ____

2.4.1.4 Locally ____

Explain:

3. Office Clock

3.1 This office is to be slave clock synchronized with another office:

____ Yes ____No

(Explain details in Appendix A, Item 16 if “Yes”.)

3.2 This office is to be a master clock office to provide synchronization timing for other offices:

____ Yes ____No

(Explain details in Appendix A, Item 16 if “Yes”.)

4. Interoffice Trunking Diagram

4.1 A sketch showing relative location of exchanges, RST's, and number of circuits shall be included, also the office and area codes of the direct trunk points. The diagram should indicate whether toll or EAS trunk groups are “High Usage” or “Final.” Alternate routes should be included. Indicate whether the trunk termination is direct digital or analog.

5. Translator Function Chart

		First route		Alternate routes
Called Point	Subscriber dials	Translator action	Send	Translator action	Send
		Deletes	Prefixes	Deletes	Prefixes

6. Line Circuit Requirements (Includes all lines associated with RST's.)

6.1 Types of Lines

	No. of lines
	Local service only	both local and EAS service	No. of EAS areas	Total No. of lines required
6.1.1 Individual—Flat Rate
6.1.2 Individual—Message Rate
6.1.3 Pay Station
6.1.4 Telephone Company Official Lines
6.1.5 Wire Chief
6.1.6 911 Emergency Service Bureau Lines
6.1.7 Number Hunting PBX Groups:

				Type		No. of lines
No. of lines in group	No. of groups	Direct in dial^a	Restricted service at COE	Ground start	Loop start	Local service only	Both local and EAS service	No. of EAS areas	Total No. of lines required

___
___
___
___
___

^a Furnish translation information under Item 5.

6.1.8 WATS Lines (Give details in Appendix A, Item 16)

Number of Inward WATS Lines ____

Number of Outward WATS Lines ____

6.1.9 Special Lines Required ____ (Explain in Item 16, Appendix A)

6.1.10 Total Number of Lines Required

Host ___ (Incl. DDI Concentrator Lines)

RST 1 ___

RST 2 ___

RST 3 ___

Total ___

6.1.11 Total Director Numbers Required ___

(Including RST's) (see Item 7.1, Appendix A)

6.1.12 Pay Station

Type ______

New __ Reused __

(Describe in Item 16, Appendix A)

6.1.13 Line Concentrator

6.1.13.1 Supplied by Owner (see Item 16, Appendix A, for details)

__ Yes __ No

6.1.13.2 Supplied by Bidder (If “Yes”, attach REA Form 397g, Performance Specification for Line Concentrators)

__ Yes __ No

6.2. Data on Lines Required Range Extension

6.2.1 Number of non-pay station lines having a loop resistance, including the telephone set, as follows:

	No. of lines
1901-3200 ohms	___
3201-3600 ohms	___

6.2.2 Number of pay station lines having loop resistance, excluding the telephone set, greater than:

	No. of lines
1200 ohms (For Prepay)	___
1000 ohms (For Semi-Postpay Operation)	___

6.2.3 Range extension equipment is to be provided:

6.2.3.1 Loop Extenders: Total Quantity ___

By Bidder—Quantity ___

By Owner—Quantity ___

(Explain in Item 16, Appendix A)

6.2.3.2 VF Repeaters: Total Quantity ___

By Bidder—Quantity ___

(Bidder must have information on loading and cable size.)

By Owner—Quantity ___

(Explain in Item 16, Appendix A)

6.2.3.3 Range extension may be furnished as an extended range line circuit at the option of the supplier. If this option is used, the quantities of loop extenders and VF repeaters will be different from the quantities listed above (see Item 6.1,a, Appendix C).

__ Yes __ No

7. Traffic Data–Line Originating and Terminating Traffic

7.1 Originating Line Traffic—Estimated per Busy Hour (Includes all Lines Associated With RST's):

	(a)	(b)	(axb)
	CCS per Main Station	No. of Main Stations	Total CCS	No. of Lines Required¹
Ind.—Res	_____	_____	_____	_____
Ind.—Bus	_____	_____	_____	_____
Special Lines	_____	_____	_____	_____
Pay Station	_____	_____	_____	_____
Telco Official	_____	_____	_____	_____
Wire Chief	_____	_____	_____	_____
No. Htg. or PBX	_____(²)	_____(³)	_____	_____
WATS	_____	_____	_____	_____
Data Service	_____	_____	_____	_____
911 Emerg. Service	_____	_____	_____	_____
Total		_____	_____	_____(⁴)
		(c)	(d)	(e)

¹ See Appendix A, Item 6.1.

² This figure is the CCS per PBX trunk.

³ This figure is the number of PBX trunks.

⁴ This is the total number of line equipments required. The number to be provided will be determined by the equipment design of the system of the selected bidder. See Appendix C, Item 3.1.1.2.

7.2 Average Originating CCS per Line per Busy Hour

(d)/(e)=__/ __=__ CCS/Line

This office shall be engineered to handle an initial average originating busy hour traffic of __ CCS per line. It is anticipated that the average originating busy hour traffic will increase to __ CCS per line.

Originating Traffic Attributed to Host Only __ CCS/Line

7.3 Terminating Traffic—Estimated CCS per Busy Hour

It is assumed that the total CCS for terminating traffic is the same as for originating traffic. Since digital switch networks are on a terminal per line basis, the terminating CCS per line will be the same as the originating CCS per line as shown in Item 7.2, Appendix A.

Terminating Traffic Attributed to Host Only __ CCS/Line

7.4 Percent of Pushbutton Lines __

7.5 Anticipated Ultimate Capacity (20 years)

7.5.1 Subscriber Lines

Host ____ (Incl. DDI Concentrator Lines)

RST 1 ____

RST 2 ____

RST 3 ____

Total ____

8. Trunk Circuit Requirements

8.1 Interoffice Trunking

8.1.1 Trunking Requirements


1. Connecting Office
2. Use of Trunk
3. Trk. Grp. Ntwk. Connection¹
4. Quantity Equipped
5. Ultimate % Growth
6. CCS Capacity
7. Direction
8. No. Digits Dialed
9. No. Digits Outpulsed
10. No. Digits Inpulsed
11. Type Signaling
12. Type Pulsing
13. Carrier Type (2-Wire)
14. Carrier Type (4-Wire)
15. Physical
16. Repeat Coils²
17. DX Signaling Set
18. Other Type Signaling
19. Delay Dial
20. Direct Digital Interface
21. a. Feature Group B
b. Feature Group C
c. Feature Group D
¹ Designation of trunk group network connection involves the following categories:
IC—Direct Inter-LATA Connecting Trunk=(IC/POP)
TC—Tandem Connecting Trunks
IT—Intertandem Connecting Trunks
IL—Intra-LATA Connecting Trunks
TIC—Tandem Inter-LATA Connecting Trunks
Misc.—Intercept, Busy Verification, etc.
² Omit repeating coils for carrier derived trunks.

8.1.2 Pads for 4–Wire Carrier (7dB and 16dB)

Total Quantity ___

By Bidder Quantity ___

By Owner Quantity ___

Refer to the attached information regarding connecting company trunk circuit drawing numbers and name of manufacturer.

8.2 Switched Traffic Data

8.2.1 Originating Traffic

Type	No. of digits out-pulsed	Sender sig. mode
Toll “0”−¹
Toll “0”+7¹,²
Toll “0”+10¹,²
Toll S-S “1”+7²
Toll S-S “1”+10²
Toll Other
Special Service
Intercept
Intraoffice	XXXXXXX	XXXXXXX
EAS
EAS
EAS
Tandem
Tandem
Tandem
911 Emerg. Service
Total

¹ PPCS traffic assumed to be divided 20 percent “0”− and 80 percent “0”+ if unknown.

² Toll calls assumed to be divided two-thirds 7 digits and one-third 10 digits.

Busy Hour Attempts=BHC Total x 1.4=__

8.2.2 Terminating Traffic

Type	CCS	H.T. secs.	BHC	No. of digits inpulsed	Receiver sig. mode	Remarks
Toll Compl.
Test & Ver.
Intraoffice
EAS
EAS
EAS
Tandem
Tandem
Tandem
Total

9. Checklist of Features Required

9.1 Alternate Routing
(Explain in Item 16, Appendix A)
9.2 Data Service
(Explain in Item 16, Appendix A)
9.3 This office shall be:
9.3.1 End Office Only
9.3.2 End Office and Intermediate Tandem
(Explain in Item 16, Appendix A)
9.3.3 End Office and Access Tandem
(Explain in Item 16, Appendix A)

9.4 Billing Data

	Send ANI feature group			Store billing data
	B	C	D	AMA system	Pollable system
9.4.1 This office only
9.4.2 Trunks from Tributaries
9.4.3 Local Message Detail Recording:

9.5 Pollable Systems

9.5.1 Polling device to be provided on this contract

__ Required

__ Not Required

(Provide details in Item 16, Appendix A)

9.5.2 Pollable system to be backed up by tape or disc standby

__ Required

__ Not Required

9.6 AMA Format

9.6.1 Bellcore Format

__Required

__ Not Required

(Provide details in Item 16, Appendix A)

10. Miscellaneous Operating Features

10.1 Busy Verification

10.1.1 By dedicated trunk from toll operator: __

10.1.1.1 One–Way, Inward __

10.1.1.2 Two–Way (Busy verification inward, intercept outward) __

10.1.2 By prefix digit over intertoll trunk __

(Indicate digit(s) dialed) __

10.1.3 Access by Switchman

10.1.3.1 Dedicated Trunk __

10.1.3.2 Multiple of Operator Trunk __

10.2 Intercept Facilities

10.2.1 Vacant code, disconnected number, and unassigned number intercept shall be: (Check One)

By recorded announcement:

Without cut-through to operator __

With cut-through to operator __

By operator __

10.2.2 Changed number intercept shall be: (Check One)

By recorded announcement:

Without cut-through to operator __

With cut-through to operator __

By operator __

By automatic intercept system (AIS) in distant office __

10.2.3 Method of Reaching Operator, if required:

Separate trunk group __

Regular interoffice toll trunks with idle trunk selecting over at least three trunks when three or more toll trunks are equipped __

10.2.4 Number of separate intercept trunk circuits __

10.3 Line Load Control

10.3.1 Line load control facilities are:

__ Required __ Not Required

(Explain in Item 16, Appendix A)

10.4 Service Observing Facilities

10.4.1 Service observing facilities are:

__ Required __ Not Required

(Explain in Item 16, Appendix A)

10.5 Hotel–Motel Arrangements

10.5.1 Hotel-motel arrangements for operation of message registers at the subscriber's premises are:

__ Required __ Not Required

(Explain in Item 16, Appendix A)

10.5.1.1 How are message registers to be activated?

Line Reversal __

Third Wire __

Other __

(Explain in Item 16, Appendix A)

10.6 Nailed–Up Connections

__ Required __ Not Required

(Explain in Item 16, Appendix A)

10.7 Vertical Services: (RST Lines are Included)

		Initially	Ultimate
10.7.1	Call Waiting—No. of Lines
10.7.2	Call Forwarding—No. of Lines
	__ Local __ Remote
	(Explain in Item 16, Appendix A)
10.7.3	Abbreviated Dialing No. of Lines
	No. of Codes per Line __ for __ Lines
	No. of Codes per Line __ for __ Lines
10.7.4	Three-Way Calling—No. of Lines
	CCS Per Line

10.7.5 Other __

(Explain in Item 16, Appendix A)

11. Maintenance Facility Requirements

11.1 Alarm Signals

11.1.1 Handled locally __

Explain in Detail:

11.1.2 Transmitted to attended point

11.1.2.1 Via operator office trunks __

11.1.2.2 Via printout or other display service __

Explain in Detail:

11.1.2.3 Type of tone to operator

11.1.2.3.1 Distinctive tone (see (i)(2)(ix) of § 1755.522) __

11.1.2.3.2 Other

Explain in Detail:

11.1.3 Alarm checking signals for carrier and mobile radio systems

11.1.3.1 Minor Alarm․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.1.3.2 Major Alarm․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.1.3.3 Terminals for both․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2 Trouble Location and Test
11.2.1 Outside plant and stations (check desired items)
11.2.1.1 Subscriber's loop test circuit:
11.2.1.1.1 As part of the maintenance center․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.1.2 Separately․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.2 Remote test set (Explain in Item 16, Appendix A)․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.3 Dial speed test circuit (Explain in Item 16, Appendix A)․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.4 Pushbutton dialing test circuit․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.5 Howler (per (o)(2)(iii)(C) of § 1755.522)․․․․․․․․․․․․․․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․
11.2.1.6 Hand test sets, number required __ (Explain in Item 16, Appendix A)

11.3 Transmission Tests

11.3.1 Furnish reference tone

Yes __

No __

Frequencies and order in which applied	Time interval for application of each frequency
____ Hz	____ Seconds
____ Hz	____ Seconds
____ Hz	____ Seconds
____ Hz	____ Seconds

11.3.2 Test Lines

11.3.2.1 Test Line 100 __

11.3.2.2 Test Line 102 __

11.3.2.3 Test Line 104 __

11.3.2.4 Test Line 105 __

(Explain in Item 16, Appendix A)

11.3.2.5 Test Line 107 __

11.3.2.6 Remote Office Test Line __

(Explain in Item 16, Appendix A)

11.4 Line Testing

11.4.1 Automatic line insulation testing

Yes __

No __

11.4.2 Owner supplied equipment

Yes __

No __

11.4.2.1 Vendor supplied interface only

Yes __

No __

If supplied by owner, explain in Item 16, Appendix A, including manufacturer, model, location.

11.5 Remote Control

11.5.1 Remote control of the system shall be provided.

Yes __

No __

If required, explain in Item 16, Appendix A, including number, type and location.

12. Power Equipment Requirements (Host Office Only)

12.1 Central Office Battery

12.1.1 A battery reserve of __ busy hours shall be provided for this office when it reaches __ lines at the ultimate anticipated traffic rates specified in Item 7.2, Appendix A.

12.1.1.1 The owner will furnish a standby generator, permanently installed in this office, with capacity sufficient to power air conditioning equipment required for cooling of the central office equipment and to maintain an adequate dc supply in the event of a failure of the commercial ac supply.

Yes __

No __

12.1.2 Type of battery: (Check One)

Lead Calcium __

Lead Antimony __

12.1.3 Voltmeter (portable 3–60–150 volt scale, 1% accuracy) shall be furnished.

Yes __

No __

12.1.4 Hydrometer in a hydrometer holder with glass or plastic drop cup shall be furnished.

Yes __

No __

12.1.5 Type of battery rack required: (Check One)

Two Tier __

Other __

Explain:

12.1.6 Special equipment power requirements (carrier, voice frequency repeaters, etc.). Drain in amperes __

12.1.6.1 Supply all necessary equipment to provide the following 48–volt battery taps:

Number of circuits	Fuse (or circuit breaker) size

12.2 Charging Equipment

12.2.1 Charging equipment shall be provided capable of charging the office battery on a full float basis when the office reaches __ lines at the ultimate anticipated traffic rates specified in Item 7.2, Appendix A.

12.2.2 Charger input rating shall be:

	3-Phase Connection:
Voltage ____	3-Wire ____
Phase ____	4-Wire ____
Frequency ____	Delta ____

	Y ____

12.3 Ringing Equipment

12.3.1 Solid-state ringing equipment in accordance with paragraph (s)(5)(i) of § 1755.522 shall be provided for generating the frequencies specified by check marks in the following table. Ringing generator sets serving the entire office shall each be sized to carry the full office ringing load when the office size reaches __ lines at the ultimate anticipated traffic rates specified in Item 7.2, Appendix A.

12.3.2 Ringing frequencies to be supplied:

	Frequency in Hz		Maximum No. of telephones
Single Frequency․․․․․․․․․․․․․․․․․․․․	20	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
Decimonic․․․․․․․․․․․․․․․․․․․․․․․․․․․	20	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	30	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	40	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	50	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
Harmonic․․․․․․․․․․․․․․․․․․․․․․․․․․․․	16 2/3	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	25	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	33 1/3	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	50	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
Synchromonic․․․․․․․․․․․․․․․․․․․․․․․․	20	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	30	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
	42	․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
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12.3.3 Furnish frequency meter (accurate within 1.3 Hz) and voltmeter (5% accuracy) for ringing measurements (see paragraph (s)(7)(ii) of § 1755.522). Check One:

Panel Mounted __

Portable __

Not Required __

12.4 Power Board

The power panel and associated wiring shall be of ample size to meet the load requirements when this office reaches __ lines at the ultimate anticipated traffic rates specified in Item 7.2, Appendix A.

13. Distributing Frame Requirements (Host Office Only)

13.1 Total number of outside plant cable pairs to be terminated
13.1.1 Gauge of outside plant cable pairs
13.2 Number of outside plant cable pairs to be protected
13.3 Number of additional protector pair units to be provided on MDF

Explain:

13.4 Main Frame Details

Is present MDF to be reused?

Yes __

No __

If “Yes,” Type __

Reused protectors are:

__ (Mfgr.)

__(Type)

13.4.1 Number of pairs of arrester units (switching equipment) __

13.4.2 Number of pairs of gas tube arrester units (special equipment) __

13.4.2.1 Gas tubes to be:

__light,

__medium,

__heavy,

__max. duty units

13.4.2.2 Fail shorted/low breakdown failure mode required

Yes __

No __

13.4.2.3 Breakdown voltage of gas tube arresters __

13.4.3 Number of terminated pairs to be grounded __

13.4.4 Factory assembled tip cable

Yes __

No __

13.4.4.1 Tip cable length [if other than 20 feet (610 cm)]

13.4.4.2 Tip cable formed

Up __

Down __

13.4.5 Pairs per vertical __

13.4.6 Height of vertical __feet __ inches

14. Building and Floor Plan Information (Host Office Only)

14.1 Equipment is to be installed in an existing building (Attach detailed plan.) __

14.2 A new building is planned __

14.2.1 Tentative plan (Note to Engineer: Show sketch without dimensions.)

14.3 Detailed Arrangements

14.3.1 Partition required (to isolate space containing battery, charger, power board, test panel, main distributing frame and subscriber's loop test circuit (wire chief's test desk) from that of the remaining equipment).

Yes __

No __

14.3.2 Vestibule required

Yes __

No __

14.3.3 Cable entrance

Overhead__

Underground __

14.3.4 Additional floor space will be required for the following equipment which is being furnished by the owner or by the connecting company:

14.3.5 The office will be arranged for

Overhead Interbay Cabling __

Underfloor (Computer Room Type) Interbay Cabling __

14.3.6 Is earthquake bracing required?

Yes __

No __

(If “Yes,” explain zone and criteria used for zone in Item 16, Appendix A.)

14.3.7 Office ground will be __ ohms or less (Refer to Item 4.6.3 of RUS TE&CM 810.)

14.3.8 The office is considered to be in the following category for lightning damage probability based on the Figure 1 map of RUS TE&CM 823 (see paragraph (u)(2) of 1755.522).

__Very High

__Higher than Average

__Average

__Lower than Average

__Very Low

14.3.9 The following is additional information regarding operating environment conditions which should be considered in determining system protection requirements (tower in vicinity, high exposure, etc.):

15. Alternate Requests

16. Explanatory Notes (Include a detailed description of any equipment to be reused, or otherwise supplied by the owner, loop extenders, subscriber carrier, VF repeaters, etc.)

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Cite this article: FindLaw.com - Code of Federal Regulations Title 7. Agriculture § 7.1755.522—Specification for Digital, Stored Program Controlled Central Office Equipment Detailed Requirements (Host) - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-7-agriculture/cfr-sect-7-1755-522-app-a/

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