sbc trunking · stub

Lumen SIP trunking

Verified 2026-10-14 · 58 sources · tier 2–4

Also known as CenturyLink SIP trunking.

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Sources

  1. 1
    Once a SIP Trunking number is assigned to a user, that user is responsible for keeping its PPU location current in Lumen Connect.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · Assigning phone numbers section · Checked 2026-10-14
  2. 2
    Moving a SIP Trunking number's 911 location to a different address requires Lumen approval, because 911 service is not provided everywhere.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · My 911 Locations section, Change Current Location · Checked 2026-10-14
  3. 3
    The primary place of use (PPU) record for a Lumen SIP Trunking number requires a physical address, first name, last name and email address.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · Assigning phone numbers section · Checked 2026-10-14
  4. 4
    For Lumen SIP Trunking numbers, emergency calls are routed only to the address shown for the number on the My 911 Locations screen in Lumen Connect.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · Section on My 911 Locations · Checked 2026-10-14
  5. 5
    My 911 Locations offers Save, Change Current Location, Schedule Future Change and Manage My Locations options, and sends an email confirming location changes.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · My 911 Locations section · Checked 2026-10-14
  6. 6
    Lumen states that 911 address change requests for SIP Trunking numbers are typically processed within 15 minutes of submission.
    Assigning SIP Trunking phone numbers and managing 911 information | Lumen · My 911 Locations section, change processing note · Checked 2026-10-14
  7. 7
    Up to 2,000 new phone numbers can be requested at a time for a Lumen SIP Trunking service in Lumen Connect.
    Adding a phone number to a SIP Trunking service · Notes following the steps · Checked 2026-10-14
  8. 8
    Adding a trunk group to a percent-allocation route plan balances inbound call volume between two or more trunk groups.
    Adding a trunk group to a route plan · Introductory paragraph · Checked 2026-10-14
  9. 9
    Lumen documents adding a trunk group to a sequential route plan as the way to provide an inbound failover option.
    Adding a trunk group to a route plan · Introductory paragraph · Checked 2026-10-14
  10. 10
    From 2026-08-01, Lumen partners could no longer sell or renew Lumen voice offerings, including SIP, Voice Complete and services for Microsoft Teams and Zoom.inferred
    Lumen clarifies product cuts · Paragraphs on the July 1 partner email and the Aug. 1 voice cutoff · Checked 2026-10-14
  11. 11
    The Broadsoft-based Lumen SIP Trunking service is managed through the Lumen VoIP portal rather than Lumen Connect.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (Broadsoft-based service)' · Checked 2026-10-14
  12. 12
    Bulk changes to SIP Trunking phone numbers are made by downloading a Bulk Load .xls spreadsheet (sent by email link), editing it and uploading it with the Bulk Load action; Lumen validates the file and emails a confirmation.
  13. 13
    Lumen Connect lets an administrator set blocked call types per phone number on a SIP Trunking service, for example allowing only local calls or allowing long distance but not international.
    Customizing the calling area for a phone number · Introductory paragraph and step 7 (Blocked Calls menu) · Checked 2026-10-14
  14. 14
    Lumen's FAQ states there is no immediate change to 911, NG 911 or PSAP connectivity as a result of the voice end-of-sale.
    Communications services FAQ (Lumen communication support) · FAQ: 911 and PSAP connectivity · Checked 2026-10-14
  15. 15
    Lumen says it will continue supporting existing voice services under its contractual and regulatory obligations and will give affected customers advance notice before any change takes effect.
    Communications services FAQ (Lumen communication support) · FAQ: what happens to my current service · Checked 2026-10-14
  16. 16
    Under the end-of-sale, requests to add, renew, expand, move or change voice service go to the account team for case-by-case review, and Lumen does not commit to holding out-of-term rates.
    Communications services FAQ (Lumen communication support) · FAQ: changes, renewals and moves · Checked 2026-10-14
  17. 17
    Lumen SIP Trunking falls within the voice end-of-sale, since it is an enterprise voice/VoIP product and its own support page carries the end-of-sale note linking to the FAQ.inferred
    SIP Trunking support | Lumen · Note directly below the page introduction, read with the FAQ product list · Checked 2026-10-14
  18. 18
    Lumen's end-of-sale FAQ names no replacement product or migration path for voice customers; it directs them to their account team.
    Communications services FAQ (Lumen communication support) · Whole FAQ (absence of migration content) · Checked 2026-10-14
  19. 19
    Lumen's voice end-of-sale FAQ states that Mass Markets services are not part of the change.
    Communications services FAQ (Lumen communication support) · FAQ: which products are affected · Checked 2026-10-14
  20. 20
    Lumen's end-of-sale FAQ gives no decommissioning date; it says timing depends on product, state, and contractual and regulatory obligations.
    Communications services FAQ (Lumen communication support) · FAQ: when will service be discontinued · Checked 2026-10-14
  21. 21
    Lumen's FAQ states there is no immediate change to existing voice customers' current service and no action is required on their part.
    Communications services FAQ (Lumen communication support) · FAQ: what happens to my current service · Checked 2026-10-14
  22. 22
    The Lumen SIP Trunking support page carries a note that Lumen announced in early July that it is moving toward the end of sale of its voice and communications services.
    SIP Trunking support | Lumen · Note directly below the page introduction · Checked 2026-10-14
  23. 23
    Lumen's voice end-of-sale covers its non-Mass Markets voice and communications portfolio, including commercial, enterprise, wholesale and public sector voice and VoIP products, Lumen Cloud Communications, Unified Communications and Collaboration, NG 911 and Contact Center Intelligence products.
    Communications services FAQ (Lumen communication support) · FAQ: which products are affected · Checked 2026-10-14
  24. 24
    Lumen's FAQ describes voice as no longer a strategic growth area for Lumen.
    Communications services FAQ (Lumen communication support) · FAQ: why is Lumen making this change · Checked 2026-10-14
  25. 25
    Lumen voice contracts that expire after the end-of-sale move to month-to-month agreements rather than renewing.inferred
    Lumen clarifies product cuts · Paragraph on the Aug. 1 voice cutoff · Checked 2026-10-14
  26. 26
    On the SONUS-based service, local and bi-directional calls are routed on flat trunks.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', trunk types paragraph · Checked 2026-10-14
  27. 27
    For a sequential route plan, the trunk group order is changed with the 'Update Hunt Sequence' action and the Move Up and Move Down buttons.
  28. 28
    Whether a route plan can have its percent allocation or its hunt sequence updated depends on the hunt type chosen when the plan was created.
    Updating the hunt sequence for a sequential route plan · Overview paragraph (redirect to percent-allocation article for non-sequential plans) · Checked 2026-10-14
  29. 29
    A Lumen Connect route plan uses one of two hunt types: sequential or percentage-based (percent allocation).
    Creating a route plan for a SIP Trunking service · Step 6 (Hunt Type) · Checked 2026-10-14
  30. 30
    Internet2 describes the Lumen SIP service as certified on Avaya, Cisco and Microsoft platforms.
    Lumen SIP Service - Internet2 · Service features section · Checked 2026-10-14
  31. 31
    The Lumen SIP service offered through Internet2 NET+ provides pooled concurrent call paths that share idle capacity across the enterprise to reduce oversubscription on site-specific trunks.
    Lumen SIP Service - Internet2 · Service features section · Checked 2026-10-14
  32. 32
    Internet2 states that static 911 for the Lumen SIP service is available for end-user locations within the CenturyLink/Level 3 voice footprint, with nomadic 911 available for UC deployments.
    Lumen SIP Service - Internet2 · 911 section · Checked 2026-10-14
  33. 33
    In Lumen Connect, SIP Trunking services are found by choosing IQ Networking from the 'Find by Product or Service Tool' list in the dashboard Services widget.
    Creating a route plan for a SIP Trunking service · Step 2 · Checked 2026-10-14
  34. 34
    Lumen's US marketing URLs for Microsoft Teams services and Voice Complete now redirect to docs.lumen.com support pages, consistent with the voice portfolio no longer being actively marketed.inferred
    Lumen Solutions for Microsoft Teams support | Lumen · Redirect from https://www.lumen.com/en-us/services/microsoft-teams.html (observed by WebFetch) · Checked 2026-10-14
  35. 35
    As of mid-July 2026 Lumen declined to say publicly whether partners must migrate existing voice customers to other SKUs.inferred
    Lumen clarifies product cuts · Paragraph on what Lumen declined to provide · Checked 2026-10-14
  36. 36
    New numbers added to a Lumen SIP Trunking service can come from any rate center, not only the rate center of the service location.
    Adding a phone number to a SIP Trunking service · Notes following the steps · Checked 2026-10-14
  37. 37
    Lumen's public HTML SIP Trunking support pages do not publish SBC interop parameters such as codecs, transport, DTMF method, authentication model or signalling IP ranges; any such values sit in PDFs, vendor application notes or customer-specific order documents.inferred
    SIP Trunking support | Lumen · Whole hub page and linked HTML procedure articles · Checked 2026-10-14
  38. 38
    For Lumen VoIP over a non-Lumen ISP, Lumen advises turning off SIP ALG on the router if supported and states it does not test, certify or provide configurations for those customer routers.
    Using VoIP service over a non-Lumen ISP · Section 'Troubleshooting' · Checked 2026-10-14
  39. 39
    Percent allocation on an existing route plan is changed through the 'Modify % Allocation' action on the route plan in the Route Plan Management tab.
  40. 40
    For a percent-allocation route plan, the percentages entered for its trunk groups must total 100%.
    Updating trunk group percent allocation for a route plan · Step 8 (% Allocation column) · Checked 2026-10-14
  41. 41
    Lumen's Q2 2026 earnings release filed as 8-K Exhibit 99.1 (2026-08-04) does not mention voice, VoIP, SIP or end of sale; it refers only to rationalizing the product portfolio.
  42. 42
    Changing a route plan's trunk groups or hunt sequence changes inbound routing for every phone number assigned to that route plan.
    Assigning a phone number to a route plan · Introductory paragraph (related changes list) · Checked 2026-10-14
  43. 43
    A Lumen SIP Trunking route plan holds one or more trunks and controls only how Lumen delivers inbound calls to them; outbound traffic is controlled by how the customer's own equipment points to Lumen trunks.
    Creating a route plan for a SIP Trunking service · Introductory paragraph · Checked 2026-10-14
  44. 44
    Lumen Connect route plans are typically in CURRENT status and show UPDATE while submitted changes are being completed.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', route plan status sentences · Checked 2026-10-14
  45. 45
    When creating a route plan in Lumen Connect, the route plan type is either TN-based or DID-based.
    Creating a route plan for a SIP Trunking service · Step 6 (Route Plan Type) · Checked 2026-10-14
  46. 46
    In the SONUS-based service, the service ID is the container for the locations, trunks, telephone numbers and DID numbers provisioned for that service, and a customer may have more than one service ID.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', service ID paragraph · Checked 2026-10-14
  47. 47
    Lumen SIP Trunking service IDs in Lumen Connect start with the prefix VO-.
    Creating a route plan for a SIP Trunking service · Step 2-3 (finding the service in the Services widget) · Checked 2026-10-14
  48. 48
    The SONUS-based Lumen SIP Trunking service is managed through the Lumen Connect portal.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)' · Checked 2026-10-14
  49. 49
    Lumen Solutions for Microsoft Teams support pages describe direct routing as letting customers use a calling plan from their preferred provider or a Lumen calling plan inside Teams.
    Lumen Solutions for Microsoft Teams support | Lumen · Page introduction, direct routing sentence · Checked 2026-10-14
  50. 50
    A phone number is pointed at a route plan from the Telephone Number Management tab, by opening the number and selecting a plan in its Route Plan list.
    Assigning a phone number to a route plan · Steps 4-6 (single number) · Checked 2026-10-14
  51. 51
    The trunk type is identified by the 10th character of the trunk group name: D indicates a usage-based trunk and L indicates a flat trunk.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', sentence beginning 'You can tell the difference between the two types of trunks' · Checked 2026-10-14
  52. 52
    The SONUS-based Lumen SIP Trunking service has two trunk types: usage-based and flat.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', trunk types paragraph · Checked 2026-10-14
  53. 53
    Lumen documents two variants of its SIP Trunking service: a SONUS-based service and a Broadsoft-based service.
    SIP Trunking support | Lumen · Sections 'Lumen SIP Trunking (SONUS-based service)' and 'Lumen SIP Trunking (Broadsoft-based service)' · Checked 2026-10-14
  54. 54
    On the SONUS-based service, outbound long-distance and toll-free traffic runs on usage-based trunks.
    SIP Trunking support | Lumen · Section 'Lumen SIP Trunking (SONUS-based service)', trunk types paragraph · Checked 2026-10-14
  55. 55
    Lumen's VoIP installation guidance requires an extended demarc that brings the T1 or Ethernet circuit within 10 feet of the router, with cabling beyond the demarcation point the customer's responsibility.
    VoIP installation support | Lumen · Section on demarc and cabling · Checked 2026-10-14
  56. 56
    Lumen's VoIP installation guidance warns that faxing can be problematic above 14.4 kbps and advises keeping mission-critical fax off VoIP.
    VoIP installation support | Lumen · Section 'Fax' · Checked 2026-10-14
  57. 57
    Lumen's VoIP installation guidance gives a number-porting timeline of 12 to 30 days depending on the number of lines, and requires a completed letter of agency (LOA) to complete installation.
    VoIP installation support | Lumen · Section 'Number porting' · Checked 2026-10-14
  58. 58
    Lumen's VoIP installation guidance states it cannot port numbers with PIC freezes or numbers on unpaid accounts.
    VoIP installation support | Lumen · Section 'Number porting' · Checked 2026-10-14

Documents

tier 2 current vendor documentation

Adding a phone number to a SIP Trunking service

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Adding a trunk group to a route plan

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Assigning a phone number to a route plan

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Assigning SIP Trunking phone numbers and managing 911 information | Lumen

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Communications services FAQ (Lumen communication support)

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Creating a route plan for a SIP Trunking service

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Customizing the calling area for a phone number

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Lumen Solutions for Microsoft Teams support | Lumen

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Lumen Technologies Reports Solid Second Quarter 2026 Results; Digital Transformation Accelerates (Form 8-K Exhibit 99.1)

Lumen Technologies via SEC EDGAR · 2026-08-04 · accessed 2026-10-14

tier 2 current vendor documentation

Making changes to multiple SIP Trunking phone numbers

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

SIP Trunking support | Lumen

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Updating the hunt sequence for a sequential route plan

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Updating trunk group percent allocation for a route plan

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

Using VoIP service over a non-Lumen ISP

Lumen Technologies · accessed 2026-10-14

tier 2 current vendor documentation

VoIP installation support | Lumen

Lumen Technologies · accessed 2026-10-14

tier 3 vendor-maintained repositories

Lumen SIP Service - Internet2

Internet2 · accessed 2026-10-14

tier 4 archived vendor documentation

Lumen clarifies product cuts

Channel Dive (Industry Dive) · 2026-07-17 · accessed 2026-10-14

Cite this page

APA

WarmTransfer. (2026, October 14). Lumen SIP trunking. WarmTransfer. https://warmtransfer.net/knowledge/lumen-sip-trunking

BibTeX

@misc{warmtransfer-lumen-sip-trunking,
  title  = {Lumen SIP trunking},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/lumen-sip-trunking},
  note   = {Verified 2026-10-14}
}