Product Listing
Series Hunting - V18.0
Product Description
Series Hunting is a line side hunting feature that starts with the dialed telephone number and tests for busy on each line in a prearranged order until either an idle line is found or the end of the list is reached.
The number of lines allowed in a Series Hunting group varies depending on the type of Central Office (CO) switch. The following indicates the maximum number of lines allowed in a Series Hunting group. Once the maximum has been reached, the caller will receive a busy signal.
| Switch Type | Line Limitations |
| 5ESS®/5RSM (remote of 5ESS) | 16 lines |
| DMS-10 | 256 lines |
| DMS™-100 | 256 lines |
| Ericsson | 16 lines |
A remote is a switch that is away from its host or control office.
- When the line limitations are reached with Series Hunting you can convert to Multi-Line Hunting. Conversion to Multi-Line Hunting is recommended before the limitation is reached.
- It is recommended that a line limit of five lines for Private Branch Exchange (PBX) and eight lines for non-PBX is followed. New Installation orders should not exceed these limits for Series Hunting.
The end-user's telephone lines must be temporarily disconnected when any of the following order activities take place:
- Change from Series to Multi-Line Hunting.
- Change from Multi-Line Hunting to Series Hunting.
- Changing the Multi-Line Hunt group number
- When lines are removed from the hunt group, other than the last line.
End-users must be made aware of the downtime and can be coordinated with CenturyLink™. For assistance with scheduling down time contact your CenturyLink Service Manager.
In addition to scheduling down time when it is most convenient for the end-user, you may need to coordinate the installation of new lines with the party responsible for the end-user's Customer Provided Equipment (CPE) e.g., A CPE vendor or electrician, or the end-user's operations department.
Information on coordinating installation can be found in the Provisioning and Installation Overview. If the installation is not coordinated, the new line(s) may be activated without being wired to the telephone sets. If the lines are not connected to the telephone sets, the lines will hunt but the caller will get a "ring no answer" condition.
Additional information on coordinating installation can be found in the Provisioning and Installation Overview.
Series Hunting does not provide hunting between residence and business lines.
Series Hunting offers the following options:
- Circular Series Hunting starts with the called line and tests for busy on each line in a prearranged order. When the end of the hunt group is reached, hunting continues to the first line of the hunt group and hunts until the line just preceding the dialed telephone number is hunted. If no idle line is found, a busy tone is returned to the caller. Circular Series Hunting is only beneficial to end-users that utilize more than one telephone number in the hunt group for incoming calls. Circular Series Hunting ensures that all lines in the hunt group are tested before a busy tone is given to the caller. Circular Series Hunting cannot be provided on a hunt group that has overflow to another hunt group.
- Overflow- allows hunting groups to be connected by adding the Call Forwarding Busy Line Intraoffice feature to the last line of the hunt group.
- Preferential List Series Hunting allows a business end-user to select a hunt sequence for subsequent lines in a Series Hunt group. The first number of the selected hunt sequence is referred to as the pilot number. Each line in the Preferential List must be part of the same Series Hunting group. When an incoming call comes in on the pilot number for a Preferential List, it will hunt through the lines in the Preferential List (selected sequence). If no idle line is found and the last line in the Preferential List is reached, hunting resumes. The last line of the Preferential List is the beginning of the hunt sequence. Preferential Hunting is activated only if the pilot telephone number is busy. The first line in a Series Hunting Group cannot have Preferential List Hunting.
- Random Make Busy - Series Hunting provides the end-user the ability to exclude a line or group of lines
from the hunt sequence temporarily using a key or switch (Customer Provided Equipment (CPE)). When an incoming
call reaches a line with Random Make Busy the call skips to the next line in the hunt sequence until an
idle line is found or the end of the hunt sequence is reached. Random Make Busy is not available with UNE-P
or UBS products.
The following table identifies the total number of lines allowed that a Random Make Busy- Series Hunting group can control:
| Switch Type | Total Lines Random Make Busy can control |
| 5ESS | 1 |
| DMS-10 | Up to 256 |
| DMS-100* | Up to 256 |
| Ericsson | 1 |
- You must assign a one to three digit numeric code to the different Random Make Busy arrangements, assign
the first arrangement as 1 and continue in consecutive order. Random Make Busy is not available with UNE-P
or UBS products.
In a DMS-100 CO switch type, one Random Make Busy can be activated on a single line or a group of lines. If the lines are to be made busy at different times, a separate Random Make Busy request is required for each line or group of lines in order to work independently.
Group Make Busy is not available with series hunting but may be provided by establishing Random Make Busy and including all of the lines in the hunt group. - Secretarial Hunting allows calls that complete a hunt group sequence to be sent to a selected line as a back-up to ensure the calls are answered.
- Stop Hunt allows the end-user to temporarily complete the hunt sequence on a specified line before reaching the end of the original hunt sequence by operating a key or a switch (Customer Provided Equipment (CPE)). When the call reaches the specified line in the hunt group before finishing the original hunt sequence the caller will hear a busy signal. One Stop Hunt arrangement is allowed per line. Stop Hunt is not available with UNE-P or UBS products.
Availability
Series Hunting is available in the following CO switch types:
- 5ESS/5RSM
- DMS-10 - Series Hunting in a DMS-10 switch is called Directory Number Hunt
- In ID-N, IA, MN, NE, ND, OR, SD, WA, Directory Number Hunt looks like a Series Hunting group.
- In AZ, CO, ID-S, MT, NM, UT, WY, Directory Number Hunt looks like a Multi-Line Hunting group. The only difference is that when calling for a Multi-Line Hunt group number, ask for a Directory Number Hunt.
- DMS-100
- Ericsson
Circular Series Hunting is available in 5ESS, DMS-100 and Ericsson CO switch types. In a DMS-10 CO switch type the Circular - Series Hunting is ordered as Circular - Multi-Line Hunting.
Preferential List - Series Hunting, in DMS-100 CO switch types in OR, WA, and ID-N is available for business end-users only, and is not available to residential accounts.
Random Make Busy-Series Hunting is available in 5ESS, DMS-10, DMS-100, and Ericsson CO switch types.
Secretarial Hunt- is available in a 5ESS CO switch type.
Stop Hunt - Series Hunting is available in DMS-10 and DMS-100. Stop Hunt-Series Hunting is not available in 5ESS and Ericsson CO switch types but may be provided by converting to Multi-Line Hunting.
Converting from Series Hunting to Multi-Line Hunting may change the way other features operate. For more information refer to the Compatibility and Restrictions table in Multi-Line Hunting.
Additional information can be found in the Pre-Ordering Overview.
Compatibility & Restrictions
Series Hunting:
| Feature/Service | Rules/Restrictions |
| Call Forwarding Busy Line Expanded | In 5ESS, 5RSM, DMS-100, Ericsson switch types, Call Forwarding Busy Line Expanded can only be installed
on the last line of a Series Hunt group.
In an Ericsson switch type, if a call forwards via Call Forwarding Busy Line Expanded, it will only forward five times regardless of the number of lines in the hunt sequence. In DMS-10 switch type, Call Forwarding Busy Line Expanded does not work with Series Hunting. |
| Call Forwarding Busy Line Intraoffice | In 5ESS, 5RSM, DMS-100, Ericsson switch types, Call Forwarding Busy Line Intraoffice can only be installed
on the last line of a Series Hunt group. NOTE: In an Ericsson switch, if a call forwards via Call Forwarding Busy Line Intraoffice, it will only forward five times regardless of the number of lines in the hunt sequence. In DMS-10 switch type, Call Forwarding Busy Line Intraoffice does not work with Series Hunting. In DMS-100 switch types, when installed on the last line of the hunt group, the call forwarding USOC will require a suffix of HG. CenturyLink will add the HG suffix if not provided on the LSR for new feature activity only. |
| Call Forwarding Don't Answer Expanded | In 5ESS, 5RSM switch types, Call Forwarding Don't Answer Expanded can be installed on any line of a
Series Hunt group. In DMS-100 switch types, when installed on the last line of the hunt group, the call forwarding USOC will require a suffix of HG. CenturyLink will add the HG suffix if not provided on the LSR for new feature activity only unless there is only one Call Forward Don't Answer on the account, in which case the HG suffix is not necessary. In an Ericsson switch type, Call Forwarding Don't Answer Expanded can only be installed on the last line of a Series Hunt group. |
| Call Forwarding Don't Answer Intraoffice | In 5ESS, 5RSM, DMS-100 switch types, Call Forwarding Don't Answer can be installed on any line of a
Series Hunt group. In DMS-100 switch types, when installed on the last line of the hunt group, the call forwarding USOC will require a suffix of HG. CenturyLink will add the HG suffix if not provided on the LSR for new feature activity only. In an Ericsson switch type, Call Forwarding Don't Answer Intraoffice can only be installed on the last line of a Series Hunt group. |
| Call Forwarding Variable | Can be installed on any line of a Series Hunt arrangement.
In a DMS-100 Call Forwarding Variable must be installed on the first number of the hunt group. Activation of Call Forwarding Variable will break the Series Hunt arrangement in all switch types except the DMS-10 switch. When Call Forwarding Variable is installed on a line in a DMS-10 hunt group, calls placed directly to the telephone number of the line with Call Forwarding Variable will forward normally. Calls placed to another number that hunts to the line with Call Forwarding will not forward. |
| Call Rejection | Is compatible on any line of a Series Hunt arrangement.
Incoming calls from numbers on the Call Rejection list will not initiate a series hunt. If someone on the call rejection list dials the main telephone number in the Series Hunt group (which has Call Rejection), then hunting will not occur. The incoming call would be rejected regardless of whether the main telephone number was busy or not. Call Rejection would only be required on the main telephone number in the hunt sequence for this arrangement. If someone on the call rejection list dials another line/number other than the main telephone number in the Series Hunt group, then the call will not be rejected unless Call Rejection has been installed on the additional telephone numbers in the hunt sequence. |
| Call Transfer | In 5ESS, 5RSM, DMS-10, Ericsson switch types, Call Transfer can be installed on any line of a Series
Hunt arrangement or Directory Number Hunt group.
In DMS-10 switch type, Call Transfer must be installed on all lines of a Series Hunt arrangement. |
| Call Waiting | In 5ESS, 5RSM, DMS-100, Ericsson switch types, Call Waiting can only be installed on the last line
of a Series Hunt arrangement.
In DMS-10 switch type, Call Waiting is not compatible on any line in a Series Hunt arrangement. Not compatible with Circular Series Hunting. |
| Caller ID | Is compatible with any line of a Series Hunt group.If the incoming call encounters a busy condition
on the line equipped with Caller ID, then the calling party's name and/or telephone number will not be
displayed.
If the incoming call hunts to another line which is equipped with Caller ID, then the calling party's name and/or number will not be displayed at the terminating location. The telephone number displayed will be the one the call was forwarded from. |
| Continuous Redial | Is compatible with any line of a Series Hunt group. |
| Custom Ringing Service | May be compatible under the following conditions:
|
| Dual Service | Is available to end-users with hunting as long as the hunt sequence is identical at the From and To locations. Exceptions: In Jackson WY and Durango CO, hunting is not available regardless of whether the sequence is identical or not. |
| Intracall®/Home Intercom | Is not compatible with hunting. |
| Priority Call | Is compatible with any line of a Series Hunt group. |
| Remote Access Forwarding | If Remote Access Forwarding is on the lead number of the hunt group, then Remote Access Forwarding
overrides the Series Hunting and all calls will forward.
If Remote Access Forwarding is on any number other than the lead number, then calls will only forward if the number is dialed directly. Calls that hunt to a number that has Remote Access Forwarding activated will not forward. |
| Scheduled Forwarding | If Scheduled Forwarding is on the lead number of the hunt group, then Scheduled Forwarding overrides
the Series Hunting and all calls will forward.
If Scheduled Forwarding is not on any number other than the lead number, then calls will only forward if the number is dialed directly. Calls that hunt to a number that has Scheduled Forwarding activated will not forward. |
| Selective Call Forwarding | May be installed on any line of a Series Hunt group. |
| Products | Rules/Restrictions |
| Centrex Plus, Centrex 21 and Centron | Hunting is only allowed within the assigned common block. |
| Centron 1, Centraflex, Customized Call Management Services (CCMS) | Hunting is only allowed within the assigned common block. |
| PBX | Series Hunting options are available on existing PBX service, all new requests are provisioned with Multi-Line Hunting. |
Information regarding these features is available in the product specific PCAT.
All Series Hunting rules and restrictions apply to Circular, Preferential List, Random Make Busy and Stop Hunt Series Hunting.
| Series Hunting Types | Rules/Restrictions |
| Circular Series Hunting | Cannot be provided on a hunt group that has overflow.
Not available on Wide Area Telephone Service (WATS) Not compatible with Call Forwarding Busy Line or Call Waiting. |
| Preferential List Series Hunting | Not compatible with the following features:
Bridged Night Numbers Call Forwarding Busy Line Call Forwarding Don't Answer Call Waiting Circular Hunting Feature Group A Line overflow options Random Make Busy Stop Hunt |
| Random Make Busy | Not available with UNE-P or UBS products.
Not compatible with Preferential List Series Hunting |
| Stop Hunt | Not available with UNE-P or UBS products.
Not compatible with Preferential List Series Hunting |
Pricing
Rate Structure
Series Hunting may have a recurring and a nonrecurring charge based on state specific Tariffs/Catalogs/Price Lists.
Rates
Retail rates for this feature can be found in the state specific Tariffs/Catalogs/Price Lists.
Rates and/or discounts are available in Exhibit A or the specific rate sheet in your Interconnection or Resale Agreement.
Optional Features
Traffic Data Report Service (TDRS) provides customers with a summary of traffic data on certain network facilities. For additional information contact your CenturyLink Service Manager.
Ordering
Ordering Rules
Additional information on ordering can be found in the Ordering Overview.
For LSRs submitted with either ACT = V - Conversion as Specified/DL or Z - Conversion as Specified/no DL, the only valid HA is N - New and will define the end state of hunting when the conversion is complete. CenturyLink will provision the hunt sequence provided on the Hunt Group Information
(HGI) form, whether it is new, existing or changed, and will remove all other hunting from the account.
The HGI form will be required if hunting USOCs are present on the product-specific form. To remove existing hunting during a conversion, omit hunting USOCs from the product-specific form and do not submit an HGI form.
For information specific to post-migration activity, and for releases that are earlier than Version 15.0, please refer to the Hunting Job Aid.
Preferential List, Random Make Busy, and Stop Hunt Series Hunting requests must be marked for manual handling or the request will be rejected.
When submitting a request to only change the hunt sequence on an existing hunt group, a product form is not required for all products except Centrex.
Feature Activity Types (Action Codes)
The valid Feature Activity Types are:
- D = Disconnect
- N = Add
When ordering hunting you must complete the Hunt Group Information Section on the LSR form and the Feature Detail of the following product specific form:
Centrex 21, Centrex Plus, Centrex Prime and Centron: The Station Details Section on the CRS form
CCMS, Centraflex, Centron 1, PBX and POTS: The Service Details Section on the RS form
UBS- Analog Switch Port: The Service Details Section on the PS form
Information on filling out the form can be found in the Local Service Ordering Guidelines (LSOG).
Feature Codes (USOCs)
Table 1: Series Hunting is identified by using the following USOCs:
| Series Hunting/ Series Sequential Hunting* |
Circular Series Hunting Applies one per hunt group on last line only |
Preferential List Series Hunting Applies in addition to HSO/HTG on every line that hunts to another line that is part of the preferential hunt group Exception - ND applies to every line in the group |
Random Make Busy- Series Hunting** Applies in addition to the HTG/HSO Is applied per line where make busy is to occur. **See Table 2 |
Stop Hunt-Series Hunting** Applies in addition to the HSO/HTG Is applied per line wherever hunting is to stop. **See Table 2 |
|
| CCMS | HTG- AZ, CO, IA, ID-S, MN, MT, ND, NE, NM, SD, UT, and WY HSO- ID-N, OR, WA |
EH6- ND, ID-N HCKPG - AZ, IA, ID-S, MN, NM, OR, SD, UT, WA, WY USOC not required in CO, MT, NE |
Not Available | Not Available | Not Available |
| Centraflex | HSO- ID-N, OR, WA | HCKPG - OR, WA HSO- ID-N |
Not Available | EHD - ID-N, OR, WA | Not Available |
| Centrex 21 | USOC not required | USOC not required | Not Available | EHD - ID-N, OR, WA P89 - AZ, IA, ID-S, MN, NE, ND, SD, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
P89 - AZ, IA, ID-N, ID-S, MN, NE, ND, OR, SD, WA, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
| Centrex Plus, Centrex Prime, Centron | USOC not required | USOC not required | USOC not required | EHD - ID-N, OR, WA P89 - AZ, IA, ID-S, MN, NE, ND, SD, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
P89 - AZ, IA, ID-N, ID-S, MN, NE, ND, OR, SD, WA, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
| Centron 1 | HTG- AZ, CO, IA, ID-S, MN, MT, ND, NE, NM, SD, UT, and WY | EH6- ND, ID-N HCKPG - AZ, IA, ID-S, MN, NM, OR, SD, UT, WA, WY USOC not required in CO, MT, NE |
Not Available | Not Available | Not Available |
| PBX | HTG- AZ, CO, IA, ID-S, MN, MT, ND, NE, NM, SD, UT, and WY HSO- ID-N, OR, WA |
EH6- ND, ID-N HCKPG - AZ, IA, ID-S, MN, NM, OR, SD, UT, WA, WY USOC not required in CO, MT, NE |
EH8- ND, First Line EH9- ND, Each additional line HSHHP - AZ, IA, ID-S, MN, NE, NM, SD, UT, WY USOC not required in CO, MT |
EHD - ID-N, OR, WA P89 - AZ, IA, ID-S, MN, NE, ND, SD, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
P89 - AZ, IA, ID-N, ID-S, MN, NE, ND, OR, SD, WA, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
| POTS | HTG- AZ, CO, IA, ID-S, MN, MT, ND, NE, NM, SD, UT, and WY HSO- ID-N, OR, WA |
EH6- ND, ID-N HCKPG - AZ, IA, ID-S, MN, NM, OR, SD, UT, WA, WY USOC not required in CO, MT, NE |
HSHHP | EHD - ID-N, OR, WA P89 - AZ, IA, ID-S, MN, NE, ND, SD, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
P89 - AZ, IA, ID-N, ID-S, MN, NE, ND, OR, SD, WA, WY PHY- CO, MT, NM, UT BRR- MN for 11-20 lines BRA - MN for 21-30 lines |
| UBS- Analog Line Side Port | HTG- AZ, CO, IA, ID-S, MN, MT, ND, NE, NM, SD, UT, and WY HSO- ID-N, OR, WA |
EH6- ND, ID-N HCKPG - AZ, IA, ID-S, MN, NM, OR, SD, UT, WA, WY USOC not required in CO, MT, NE |
HSHHP | Not Available | Not Available |
*Note: Series Hunting and Series Sequential Hunting are ordered using the same USOCs. The only difference is that in Series Hunting, the numbers in the hunt group are not programmed in sequential order. The numbers in a Series Sequential hunt group would be programmed in sequence (e.g. 555-0001, 555-0002, 555-0003).
Table 2: **Additional Feature Codes (USOCs) Required for Random Make Busy/Stop Hunt
Note: Random Make Busy and Stop Hunt are not available with UNE-P or UBS products.
| States Applicable | Random Make Busy/Stop Hunt USOC | Additional USOCs required |
| ND, NE, SD | P89 | 1DC2X, PCWWX |
| IA, MN | P89 | TUSFX, PCWWX |
| ID-N | EHD- Random Make Busy P89 - Stop Hunt |
1LXBJ |
| WA | EHD- Random Make Busy P89 - Stop Hunt |
1D92X, PCWSX |
| OR | EHD- Random Make Busy P89 - Stop Hunt |
1DC2X, PCWWX |
| AZ, ID-S, MT, WY | PHY- Random Make Busy P89, PHY- Stop Hunt |
1DC2X, PCWSX |
| UT | PHY- Random Make Busy P89, PHY- Stop Hunt |
1DC2X, PCWSX, PMWAX |
| CO, NM | PHY | X2KBX, FQTX1, CHBN2 |
Table 3:
| State | Series USOC | Apply To | |
| All lines in hunt group including the last line of the group | Each line that hunts to another line | ||
| AZ | HTG | X | |
| CO | HTG | X | |
| IA* | HTG | X* | |
| ID-N | HSO | X | |
| ID-S | HTG | X | |
| MN* | HTG | X* | |
| MT | HTG | X | |
| ND | HTG | X | |
| NE | HTG | X | |
| NM | HTG | X | |
| OR | HSO | X | |
| SD | HTG | X | |
| UT | HTG | X | |
| WA | HSO | X | |
| WY | HTG | X | |
*In IA and MN the HTG USOC applies to all lines except the last line in the hunt group, except when in a DMS-10 or DMS-100 CO switch and the hunt group is using Out Directory Number (ODN) to establish overflow.
Feature Detail (FID and Data Requirements)
When adding or removing any type of Series Hunting on new or existing accounts other than during Conversion activity, you must include the appropriate Series Hunting USOC (HTG or HSO) along with the appropriate USOC for the desired series hunting type from the Feature Codes table. Table 1 identifies which USOC (HTG or HSO) is required based on product and hunt type desired. Table 3 defines the rules as to which lines require the USOC based on state. For information regarding the removal of Series Hunting during a Conversion, refer to Ordering Rules.
Adding Series Hunting
This feature is ordered by including:
- Feature Activity Type N and USOC HTG or HSO.
Removing Series Hunting
This feature is removed by including:
- Feature Activity Type D and USOC HTG or HSO.
Adding Circular, Preferential List, Random Make Busy, and Stop Hunt- Series Hunting:
This feature is ordered by including:
- Feature Activity Type N and the appropriate USOC(s) from the Feature Codes tables.
NOTE:
For Preferential List, Random Make Busy, and Stop Hunt Series hunting, you must mark the Manual Handling indicator in the Remarks section of the LSR form.
Removing Circular, Preferential List, Random Make Busy, and Stop Hunt- Series Hunting:
This feature is removed by including:
- Feature Activity Type D and the appropriate USOC(s).
When changing, converting or removing an existing hunt group the hunt group identifier must be entered in the HID field located on the HGI form. Hunt groups are assigned a one to four alphanumeric character code (A through ZZZ or A1 through ZZZ1) as the hunt group identifier. This hunt group identifier can be found on the Customer Service Record (CSR) behind the HTG FID.
NOTE: On CSRs with hunting in AZ, CO, ID-S, MT, NM, UT and WY, the action codes used for the left-hand subsequent order activity will show an additional numeric character being added or removed with the left-hand HTG entry when there is activity on the HTG entry. For example, if the existing CSR shows HTG A when subsequent order activity occurs the entry will show HTG A1, then for the next order activity the entry will show HTG A again.
Last Update: March 26, 2015
Last Reviewed: October 13, 2023