CanonT11

00 · Header

Local Gateway as the calling bridge

Local Gateway as the calling bridge T11R02 Unified CMLGWCloudPSTN
Illustrated scene for Local Gateway as the calling bridge. Original drawing, not a product screenshot.

T11-R02. nbedetf names the platforms that can be a Local Gateway. t9xctu is the administrator article for trunking models and third-party session border controllers. [cite:14] [cite:19]

Reading 10 minWrittenStudy notes

01 · TL;DR

Five lines, then why it matters

  • Local Gateway can be on premises or partner hosted. [cite:14]
  • Named Cisco platforms: ISR 1100 and 4000, Catalyst 8200 and 8300, and Catalyst 8000V, plus certified third-party SBCs. [cite:14]
  • It is for a phased migration as well as PSTN. [cite:14]
  • t9xctu, header September 10, 2026, covers trunking models, supported SBCs, capacity, connectivity, configuration, TLS troubleshooting, and third-party Local Gateway. [cite:19]
  • This room does not invent a dial-peer. T7 is the SIP track.

02 · Map

One bridge, two jobs

Job one is PSTN for cloud-registered endpoints. Job two is calling between Unified CM endpoints and cloud endpoints. [cite:14]

03 · Core

What the opened pages say

The after table calls Local Gateway the bridge between the customer’s on-premises unified communications network and Webex Calling. Cisco IOS-XE routers and certified third-party SBCs can be that gateway for a phased approach. [cite:14]

PSTN can instead be Cisco Calling Plan or Cloud Connect, with no on-premises equipment. That is a different choice from Local Gateway. [cite:14]

The Local Gateway getting-started page was opened. Its contents include trunking models and support for a third-party Local Gateway. This room does not copy command lines from it. [cite:19]

04 · Ecosystem

Ecosystem and sister technologies

Phased migration
The reason the guide allows an on-premises Local Gateway while both systems exist. [cite:14]
Certified third-party SBC
Allowed as a Local Gateway, beside the named Cisco routers. [cite:14]
Cloud PSTN
Cisco Calling Plan or Cloud Connect, no on-premises gear. [cite:14]
Trunking model
A section on the Local Gateway getting-started page. Details stay in that article. [cite:19]

Sister-technology matrix

SisterWhat the opened page supportsWhy it matters hereCite
T7 SIPTrunk design and traces.This room names the bridge. It does not replace a trace lab.[cite:19]
T2 callingThe three PSTN choices.Local Gateway is the premises choice in that track.[cite:14]
SIP Universe labSibling lab for SIP itself, opened 2026-10.Not a Webex dial plan.[cite:21]

Integration edges

FromToMechanismCite
Unified CMLocal GatewayIntegration path in the migration guide.[cite:14]
Local GatewayWebex CallingRegistration of endpoints is on the Webex Calling service, not described as proxied registration.[cite:14]
PartnerHosted Local GatewayAllowed.[cite:14]

05 · Flow

Order of operations

  1. Choose premises PSTN or a cloud PSTN option. They are different rows.
  2. If premises, pick a named Cisco platform or a certified third-party SBC.
  3. Read t9xctu before you configure.
  4. Keep T7 open for the SIP details this room does not copy.

06 · Config

Clicks the articles print

  • Platform list from nbedetf: ISR 1100 and 4000 series, Catalyst 8200/8300, Catalyst 8000V, certified third-party SBCs. [cite:14]
  • Configuration steps live in t9xctu. [cite:19]

07 · Limits

Limits the articles state

ItemValueSource
Cloud PSTN gearNone on premises, for Calling Plan or Cloud Connect.[cite:14]
Command linesNot copied in this room.[cite:19]
Third-party SBCMust be a certified Local Gateway. The guide says certified. It does not paste a vendor matrix here.[cite:14]

08 · Trouble

Trouble

SymptomWhat the article supportsDo thisCite
Phones are pointed at the Local Gateway as their registrarThe guide gives registration to the Webex Calling service and uses Local Gateway as the bridge.Re-read the after table before you change the phone’s call-control home.[cite:14]
An uncertified firewall is called a Local GatewayThe article says certified third-party SBCs.Do not assume every SBC qualifies.[cite:14]

09 · Self-question

Oral ladder

L1Name two Cisco platforms that can be a Local Gateway.

ISR 1100 or 4000, Catalyst 8200 or 8300, or Catalyst 8000V. [cite:14]

L2What article is the admin starting point?

t9xctu, header September 10, 2026. [cite:19]

L3What is the no-premises PSTN alternative?

Cisco Calling Plan or Cloud Connect. [cite:14]

10 · Lab

Read it back

11 · Quiz

Quiz

Q1Check

Can a partner host the Local Gateway?

Answer

Yes. The guide says on premises or hosted by a partner. [cite:14]

Q2Check

Is Survivability Gateway the same row?

Answer

No. It is a separate product in the after table. [cite:14]

Q3Check

Does this room include dial-peer syntax?

Answer

No. t9xctu and T7 hold the configuration depth. [cite:19]

12 · Audio

Read-along uses the page

13 · Interview

Oral-ready

30 seconds. Local Gateway bridges PSTN and Unified CM to multi-tenant Webex Calling. Named Cisco routers and certified third-party SBCs can be that box. [cite:14]

2 minutes. Cloud PSTN skips the box. A phased move keeps it. I configure from t9xctu, and I do not paste dial-peers I did not read. The SIP sibling lab is for the protocol, not for this product choice. [cite:19] [cite:21]

14 · Citations

Ledger

Opened 2026-10. Mirrors cites/T11-R02.md.

  1. Introduction, Unified CM to Webex Calling, help.webex article nbedetf, header January 14, 2026. The guide is Unified CM to Webex Calling multi-tenant only. Local Gateway is described as a bridge. PPDIO is Prepare, Plan, Design, Implement, Optimize.
  2. Get started with Local Gateway, help.webex article t9xctu, header September 10, 2026. The opened page is the administrator guide for Local Gateway trunking models, supported session border controllers, and third-party Local Gateway.
  3. Sibling labs opened 2026-10 at cyphermonkeylabs.com. UC Lab, AI Lab, Amazon Connect, Microsoft Voice, Five9, Genesys Cloud, NICE CXone, and SIP Universe.

15 · Re-engineer later

Open

  • The certified-SBC matrix inside t9xctu was not copied. Open it before you name a vendor.

Sources and go deeper

Checked links were opened this month. A confirm row has no address because that page was not opened.

sources.json for this page.