CUBE / LGW & Analog Gateway Config

Step 1

Platform & Deployment Mode

Select the CUBE/LGW platform (ISR 44XX removed — End of Sale) and trunk mode. Platform-specific defaults auto-populate.

Platform Selection (EoS models removed)

ISR 4321

≤250 calls
Small branch

ISR 4331

≤500 calls
Branch

Catalyst C8200

≤6500 calls
Campus

Catalyst C8300

≤6500 calls
Campus+NIM

Catalyst C8500

6500+ calls
Data Centre

C8000V (vCUBE)

Virtual
VMware/AWS/Azure

Ribbon SBC 1000

≤1000 calls
Certified 3rd-party

Ribbon SBC 2000

≤2000 calls
Certified 3rd-party

Select a platform above.

Trunk Mode to Webex

Registration-based (SIP Digest)

Max 250 concurrent calls/trunk. No certificate needed. IOS-XE ≥17.6.1a. Cisco CUBE only.

Certificate-based / mTLS — Recommended

Max 6500 concurrent calls/trunk. Public CA cert required. IOS-XE ≥17.9.1a. Supports 3rd-party SBCs.

LGW Deployment Role

Select all systems this LGW connects. Choose combination roles for hybrid deployments.

Primary Role

Webex Target Environment

Select a role to see the configuration impact.

Step 2

Interfaces & VLANs

WAN Interface

WAN IP Address

WAN Subnet Mask

Default Gateway

NAT Required?

NAT Public IP (if applicable)

LAN / Voice Interface

LAN Interface

LAN IP Address

LAN Subnet Mask

Voice VLAN ID

SIP Bind Interface

Step 3

SIP & Dial Peers

Webex / Cloud Trunk

Webex Trunk Domain / FQDN

Trunk Username (reg-based)

Trunk Password (reg-based)

Outbound DP Tag (to Webex)

Inbound DP Tag (from Webex)

Outbound Pattern to Webex

Codec

PSTN SIP Trunk

PSTN Provider IP / FQDN

PSTN SIP Port

Transport

Outbound DP Tag (to PSTN)

Inbound DP Tag (from PSTN)

PSTN Outbound Pattern

Translation (CLI normalisation)

Country Code (if translating)

CUCM Integration

CUCM Publisher IP/FQDN

CUCM SIP Port

CUCM Transport

DP Tag to CUCM

Pattern to CUCM (internal DNs)

CUCM Subscriber IP

Step 4

Security & TLS

TLS & Certificates

Trustpoint Name

LGW FQDN (must match cert CN/SAN)

Certificate Authority

TLS Version

SRTP & Media

SRTP Policy

RTP Port Range (LGW side)

RTP Start Port

RTP End Port

Step 5

QoS & DSCP Marking

DSCP Values

Voice RTP

Video RTP

SIP Signalling

Generate MQC QoS Policy?

Queue Allocation

Policy Map Name

Voice Queue %

Video Queue %

Signalling Queue %

Step 6

Advanced Options

SRST & HA

SRST Mode

Max SRST Phones

CUBE HA Mode

CUBE HA Virtual IP

Management & Logging

NTP Server

Syslog Server IP

SNMP Community

SSH Access

Emergency Numbers

Output

Generated IOS-XE Configuration

⚠ This is a starting template. Review with Cisco TAC before production deployment. Platform-specific syntax may vary.

! Click "Generate Config →" in Step 6 to produce the IOS-XE configuration.

Analog Gateways

Cisco Analog Gateway Configuration

Full IOS configuration generator for all Cisco VG Series analog voice gateways — VG310, VG320, VG350, VG400, VG410, VG420, VG450 — supporting CUCM (SCCP/MGCP/SIP) and Webex Calling modes.

Launch Analog Gateway Config Tool

The Cisco Analog Gateway Config Generator is a dedicated tool for VG Series gateways with visual per-port configuration, bulk DN assignment, certificate upload, ACL builder, SCCP/MGCP/SIP CUCM support, and Webex Calling activation. Opens in a new tab so you can work on both tools simultaneously.

Supported Platforms & Use Cases

Series	Models	Max Ports	Mode
VG3xx	VG310, VG320, VG350	160 FXS	CUCM only
VG400	VG400 (2/4/6/8 port)	8 FXS	CUCM + Webex
VG410	VG410 (24/48 port)	48 FXS	CUCM + Webex
VG420	VG420 (84/132/144 port)	144 FXS	CUCM + Webex
VG450	VG450 (48/96/144 port)	144 FXS	CUCM + Webex

Analog Gateway Tool — Full Feature Set

Gateway & Port Config

✓ All VG3xx / VG4xx / VG450 models ✓ Visual per-port editor grid (click any port) ✓ Bulk DN fill — sequential or paste list ✓ E.164 / +prefix support throughout ✓ Signal type: Loop-start / Ground-start ✓ Companding: A-law (EU) / μ-law (NA) ✓ Echo cancel, VAD, codec, DTMF relay ✓ Per-port description, type (FXS/FXO/E&M)

CUCM & Webex Integration

✓ SCCP — telephony-service + sccp ccm ✓ MGCP — mgcp call-agent config ✓ SIP — sip-ua registrar ✓ CUCM versions 10.5 through 15.0 SU4 ✓ Publisher + multiple Subscribers ✓ CCM-manager auto-config (TFTP) ✓ Webex Calling activation code mode ✓ Webex SRTP, provisioning server URL

Security, ACL & Advanced

✓ PEM/CRT certificate chain upload (drag & drop) ✓ ACL builder: Mgmt / CUCM / Webex / SNMP ✓ Named or numbered ACLs with wildcard ✓ CoPP — Control Plane Policing for SIP ✓ QoS / DSCP marking (EF/AF41/CS3) ✓ Voice translation rules + profiles ✓ SNMP v2c with trap host, location, contact ✓ Syslog + configurable logging level

Which tool to use? Use this page (CUBE/LGW Generator) for Catalyst C8200, C8300, C8500, C8000V, ISR 4321/4331, and Ribbon SBC — these are SIP-TLS/mTLS voice gateways providing PSTN trunking and Webex cloud connectivity for enterprise IP calling. Use the Cisco Analog Gateway tool for VG Series devices that provide FXS/FXO analog ports for legacy analog phones, fax machines, door entry phones, elevator emergency lines, and overhead paging amplifiers.