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Table of Contents


Document Overview

This document provides a configuration guide for Ribbon Session Border Controller Edge Series (SBC) when connecting to Cisco Unified Communication Manager 11.0 (CUCM 11).


The interoperability compliance testing focuses on verifying inbound and outbound call flows between the Ribbon SBC Edge and Cisco Unified Communication Manager 11.0 (CUCM 11).


 This technical document is intended for telecommunication engineers with the purpose of configuring the Ribbon SBC Edge series aspects of the AT&T Flex Reach SIP trunk group with the Cisco Unified Communication Manager 11This configuration requires navigating a third-party server and the Ribbon SBC Web browser user interface, Embedded Management Application (EMA). Understanding the basic concepts for IP/Routing, SIP, RTP, and TLS are also required for completing the configuration and any necessary troubleshooting.


The following equipment and software were used for the sample (see Topology):



Software Version

Ribbon Networks

Ribbon SBC Edge (2000)





Third-party Equipment

Cisco UCM 11.0
 Cisco IP Phone 7942


Reference Configuration

The following reference configuration illustrates the connectivity between a third-party and the Ribbon SBC Edge.




For any questions regarding this document or the content herein, please contact your maintenance and support provider.


Third-Party Product Features

The testing was executed with the AT&T test plan, and the following features were tested:

  • Basic originated and terminated calls 
  • Calling Number presentation
  • Hold and Resume
  • Voice Mail
  • Conference Call
  • Call Transfer
  • Call Forwarding
  • Auto Attendant
  • Meet-Meet Conference
  • AT&T IP Teleconferencing
  • N11 Calls
  • FAX
  • DTMF
  • Network Based Enhanced Features

Not Supported Features

  • cRTP
  • SBC does not send SIP with SDP without p-time
  • SBC does not support network based transfer with SIP Refer method
  • CUCM does not support SIP REFER method for network transfer
  • Voice mail is not supported on the single server deployment.
  • PBX-Based Auto Attendant is not supported on the single server deployment.

Verify License

No special licensing required.


Cisco UCM 11 Configuration

The following new configurations are included in this section:

  1. SIP Profile
  2. SIP Trunk Security Profile
  3. Trunk
  4. Route Group
  5. Route List
  6. Route Pattern
  7. Meet-Me Number

1. SIP Profile

Select Device > Device Settings > SIP Profile

SIP Profile


2. SIP Trunk Security Profile

Select System> Security > SIP Trunk Security Profile

SIP Trunk Security Profile


3. Trunk

Select Device > Trunk



4. Route Group

Select Call Routing > Route/Hunt > Route Group

Route Group


5. Route List

Select Call Routing > Route/Hunt > Route List

Route List


6. Route Pattern

Select Call Routing > Route/Hunt > Route Patterns


Use this procedure to create any Route Pattern configuration.

Route Pattern


6. Meet-Me Number

Select Call Routing > Meet-Me Number

Meet-Me Number


Ribbon SBC Edge Series Configuration

The following steps provide an example of how to configure Ribbon SBC Edge.

  1. Easy Config Wizard
  2. SIP Profile
  3. Q.850 Cause Code to SIP Override Tables
  4. Tone Table
  5. Media Profile
  6. Media System Configuration
  7. Media List
  8. Message Manipulation
  9. SIP Server
  10. Signaling Group
  11. Transformation
  12. Call Routing Table  

1. Easy Config Wizard

The SBC interface includes an Easy Configuration Wizard, which enables end users to quickly deploy SBC.  Based on a template, you can configure items such as endpoint (define user and provider), routing (routing configuration applied to scenario), and country (tone table parameters and emergency numbers for a particular country).

Easy Config Wizard



2. SIP Profile

SIP Profiles control how the Ribbon SBC Edge communicates with SIP devices. The SIP Profiles control characteristics such as

  • Session timers
  • SIP Header customization
  • SIP timers
  • MIME payloads
  • Option tags

To configure the SIP Profiles, select Settings > SIP > SIP Profiles.




3. Q.850 Cause Code to SIP Override Table

By default, the SBC Edge uses RFC 3398 cause code mappings. Q.850 Cause Code to SIP Override Table allows you to define other mappings for cause codes.

To configure the Q.850 Cause Code to SIP Override Table, select Q.850 Cause Code to SIP Override Tables.

Q.850 Cause Code to SIP Override Table AT&T-IPFR: ATT


4. Tone Tables

Tone tables allow the SBC Edge administrator to customize the tones a user hears when placing a call. You can modify the tone to match your local PSTN or PBX. The default tone table configures the following categories with the United States' values:

  • Ringback
  • Dial
  • Busy
  • Congestion
  • Call Waiting
  • Disconnect
  • Confirmation

To configure the Tone Tables, select Settings > Tone Tables.

Tone Table AT&T-IPFR: United States


5. Media Profile

Media profiles specify the individual voice and fax compression codecs, and their associated settings for inclusion into a Media list. Different codecs provide varying levels of compression, which enables the reduction of bandwidth requirements at the expense of voice quality. 

To access the Media Profile, select Settings > Media > Media Profiles.

AT&T-IPFR (Cisco)




6. Media System Configuration

The Media System Configuration contains system wide settings for the Media System. To configure the Media System, set the number of RTP/RTCP port pairs and the starting port.

To access the Media Profile, select Settings > Media > Media System Configuration.

Media System Configuration

7. Media List

The Media List shows the selected voice and fax compression codecs and their associated settings.

To access Media lists, select Settings > Media > Media List.

AT&T-IPFR: Cisco List

AT&T-IPFR: ATT Trunk List

8. Message Manipulation

Condition rules are rules that apply to a specific component of a message (for example,,, and such) with the value in the Match Type list box. The value is matched against a literal value, token, or REGEX.

To configure Message Manipulation, select Settings > SIP > Message Manipulation > Condition Rule Table.

The rule on the next figure changes a host part for the PAID (P-Asserted-Identity) header for all outbound calls to ATT SIP Trunk with an IP address of public interface.


9. SIP Server

The SIP Server tables contain information about the SIP devices connected to the Ribbon SBC Edge. The table entries provide information about the IP addresses, ports, and protocols used to communicate with each SIP server. The entries also contain links to counters that are useful for troubleshooting.

To configure the SIP Server, select Settings > SIP > SIP Server Tables.


AT&T-IPFR: Border Element



10. Signaling Group

Signaling Groups allow telephony channels to be grouped together for routing and shared configuration. The Signaling Groups are the entity to which calls are routed and where the Call Routes are selected.  In the case of SIP, Signaling Groups will specify protocol settings and link to server, media, and mapping tables.

To configure Signaling Groups, select Settings > Signaling Groups.



AT&T-IPFR: ATT Border Element




11. Transformation

Transformation tables facilitate the conversion of names, numbers, and other fields when routing a call. For example, transformation table converts a public PSTN number into a private extension number or a SIP address (URI). Every entry in a Call Routing table requires Transformation tables, which are sequentially selected. In addition, Transformation tables are configurable as a reusable pool that action sets can reference.

To configure the Transformation table, select Settings > Transformation.


AT&T-IPFR: From Cisco CUCM


From Fax-TenorGW

From ATT to FAX


12. Call Routing Table

Call Routing allows calls to be carried between Signaling Groups, which allows calls to be carried between ports and between protocols (for example, ISDN to SIP). Routes are defined by Call Routing tables, which allows for flexible configuration of calls that are carried, as well as how the calls are translated. These tables are one of the central connection points of the system linking Transformation tables, Message translations, Cause Code Reroutes, Media lists, and the three types of Signaling Groups: ISDN, SIP, and CAS.

To configure the Call Routing Table, select Settings > Call Routing Table.

AT&T-IPFR: From Cisco CUCM


From Fax-TenorGW


These Application Notes describe the configuration steps required for Ribbon SBC Edge Series to successfully interoperate with AT&T IP Flex Reach SIP Trunk. All feature and serviceability test cases were completed.