AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

1

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respective owners.

AT&T IP Flexible Reach Service

on AT&T MIS Service

Media Flow Around Addendum

For

Cisco Unified Border Element (CUBE)

Customer Configuration Guide

with AT&T Certified IP-PBX Solutions

February 16, 2016

Version 1.0

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

2

other marks are trademarks and service marks of AT&T Intellectual Property. All other marks are the property of their

respective owners.

AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual

Property and/or AT&T affiliated companies. All other marks contained herein are the property of their

respective owners.

INTRODUCTION .................................................................................................................................................. 3

1 REFERENCES ............................................................................................................................................... 5

1.1 CAVEATS....................................................................................................................................................... 5

1.2 CISCO UNIFIED COMMUNICATIONS MANAGER WITH CASCADED ASR CUBE 1.4 DOCUMENTATION ........................ 5

1.3 CISCO UNIFIED COMMUNICATIONS MANAGER WITH CASCADED ISR G2 CUBE 10.0 DOCUMENTATION.................. 6

2 OVERVIEW .................................................................................................................................................. 6

3 SPECIAL CONSIDERATIONS ...................................................................................................................... 7

4 CISCO UNIFIED BORDER ELEMENT CONFIGURATIONS FOR VARIOUS IP-PBX SOLUTIONS ............... 7

4.1 CISCO UNIFIED COMMUNICATIONS MANAGER WITH CISCO ISR G2 CER AND INTEGRATED CUBE 10.0 OR WITH

CISCO ASR CER AND INTEGRATED CUBE 1.4 .................................................................. ERROR! BOOKMARK NOT DEFINED.

4.1.1 Changes to Standard Solution (binding the signaling only to a loopback interface and configure

MTP) to Support Media Flow Around .................................................................. Error! Bookmark not defined.

4.2 CISCO UNIFIED COMMUNICATIONS MANAGER WITH CISCO ISR G2 CER AND CASCADED ISR G2 CUBE 10.0 OR

WITH CISCO CER AND CASCADED ASR CUBE 1.4 ........................................................................................................... 9

4.2.1 Changes to Standard Solution (binding the signaling only to a loopback interface) to Support

Media Flow Around ............................................................................................................................................. 9

ACRONYMS ........................................................................................................................................................ 12

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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Introduction

This Customer Configuration Guide (“CCG”) provides recommended guidelines for configuring

the customer-managed Cisco Unified Border Element (CUBE) for Media Flow Around (MFA)

operation with AT&T IP Flexible Reach Service on AT&T MIS Service (“AT&T MIS”) as the

Underlying Transport Service, specific to the various AT&T Certified IP-PBX Solutions listed

below. The CUBE is cascaded behind the Customer Edge Router (CER). This CCG is to be used in

conjunction with the appropriate IP-PBX/SBC CCG which cover the additional configurations

required for use with this service including, but not limited to, configuration of the IP PBX and

SBC. See the References section below for links to the appropriate documents based on the

solution being used.

MFA causes media to flow directly between customer end devices such as phones and the

AT&T IP Border Element (IPBE) rather than being processed through the CUBE. There are

several advantages to MFA including media flow directly to remote IP Phone sites (avoiding hub

sites) and increased concurrent call capacity on the CUBE. Several prerequisites must be met to

enable MFA. Your account team can help determine if this feature is available in your

environment.

The following solutions are currently supported with a cascaded CUBE and are covered in this

guide:

 Cisco Unified Communications Manager with cascaded Cisco CER / ASR CUBE 1.4

 Cisco Unified Communications Manager with cascaded ISR G2 CER / CUBE 10.0

Please ensure your system set-up is consistent with the recommended specifications provided

in this document. AT&T reserves the right to modify or update its guidelines at any time

without notice, so please check the following link to be sure you have the latest version of this

document (http://www.corp.att.com/bvoip/ipflex/training/ (login: att, password: attvoip)).

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

4

other marks are trademarks and service marks of AT&T Intellectual Property. All other marks are the property of their

respective owners.

You may also wish to consult with your AT&T technical sales representative to have them verify

that you have the latest document.

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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respective owners.

1 References

The document links below are hosted on either a public Cisco website not requiring

authentication or an AT&T website requiring the following authentication; login: att, password:

attvoip. Each certified solution is listed below with the required documentation to configure

the IP-PBX/CUBE.

1.1 Caveats

Note that the caveats described in the following documents also apply to the Media Flow

Around (MFA) mode of operation. In addition when the call forward unconditional (call

forward all) feature of Cisco Unified Communications Manager is used and the forward number

is a toll free number that uses a network prompter (i.e., a valid response from the calling party

is required before the toll free number provides connect) the call fails with no audio. Typically

this type of toll free number is used by large scale call handlers such as reservation systems and

customer support lines. There is no issue with call forward unconditional to toll free numbers

that don’t employ a network prompter or any other destination.

1.2 Cisco Unified Communications Manager with cascaded ASR CUBE 1.4

documentation

AT&T IP Flexible Reach service on MIS, MIS with MPLS PNT and AT&T VPN Service: Connecting Cisco

Unified Communications Manager 8.0(3) via the ASR 1000 (series) Cisco Unified Border Element

(Enterprise Edition) 1.4 using SIP

http://www.cisco.com/en/US/solutions/collateral/ns340/ns414/ns728/ns833/1024986.pdf

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

6

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respective owners.

1.3 Cisco Unified Communications Manager with cascaded ISR G2 CUBE 10.0

documentation

NOTE – CUBE 10.0 requires 15.4(3)M1 IOS.

AT&T IP Flexible Reach Service With Enhanced Features Using MIS / PNT or AT&T Virtual Private

Network Transport With Cisco Unified Communications Manager 10.0.1 and Cisco Unified Border

Element 9.5.1

http://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/interoperability-

portal/application-notes-cucm-att-flexible-Reach.pdf

2 Overview

AT&T IP Flexible Reach Service over AT&T MIS as the Underlying Transport Service is an AT&T

Business Voice over IP (BVoIP) Service.

This document should be used solely as a general configuration guideline. The Customer is

solely responsible for determining the appropriate configuration for their specific environment;

AT&T provides resources to assist with that configuration. Please contact your AT&T technical

support representative for assistance if needed.

Configuration examples in this guide are provided for informational purposes only. The

example configurations may be mapped to a variety of vendor implementations, check with

your AT&T technical support representative if you have any questions.

Note: The configuration examples provided in this document are based upon Cisco IOS

features, however, the features are NOT described in their entirety; and may vary across

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

7

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hardware platforms and versions of IOS. Please refer to the appropriate Cisco documentation

relative to your IOS features.

3 Special Considerations

 The following TCP/IP ports must not be blocked by firewall or access lists:

o AT&T IP Border Element signaling and media addresses.

o SIP signaling traffic (UDP port 5060).

o RTP/RTCP traffic (UDP port range 16384-32767).

 The configuration information in this CCG assumes a single primary CER. Any alternate

routing configurations or remote branch connectivity to other sites, within the same or

other AT&T MIS, requires proper configuration of the signaling and media paths.

Routing configurations in all customer routers need to be set up to assure that the

routing in the primary CER is not affected.

4 Cisco Unified Border Element Configurations for various IP-PBX

Solutions

This section will assist in properly configuring Media Flow Around (MFA) on the Cisco Unified

Border Element (CUBE) to insure interoperability with AT&T Certified IP-PBX solutions for use

on AT&T IP Flexible Reach Service on AT&T MIS transport. Please review the section below that

is applicable to your environment.

Important Note: The IP-PBX solutions below make reference to IP Border Element (IPBE) IP

Addresses, Signaling IP Address, and Media IP Address which are provided to the Customer

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

8

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prior to the scheduled Pre-test date in a letter AT&T will send titled Customer Router

Configuration Shipping/Confirmation. The Signaling IP Address and the Media IP Address can be

Customer supplied or AT&T provided.

Throughout this document, AT&T provided IP Address is synonymous with IP Flexible Reach IP

Address.

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

9

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respective owners.

4.1 Cisco Unified Communications Manager with Cisco ISR G2 CER and

cascaded ISR G2 CUBE 10.0 or with Cisco CER and cascaded ASR CUBE 1.4

This Cisco Unified Communications Manager (CUCM) solution works in conjunction with a CUBE

that is separate from a Cisco CER (referred to as cascaded CUBE). This section covers the CUBE

and CUCM specific commands. Please see the appropriate CCGs for CUCM and CER specific

configurations.

Note:

 The cascaded CUBE with Media Flow Around (MFA) only supports Customer Managed

Sites running IOS 15.4(3)M1 (CUBE 10.0) on the ISR G2 or IOS 15.3(3)S1 (CUBE 1.4) on

the ASR 1001 or ASR 1002.

 Network Address Translation (NAT) of the Signaling Address is not an option for the

cascaded CUBE solution with MFA.

4.1.1 Changes to Standard Solution (binding the signaling only to a loopback

interface) to Support Media Flow Around

Step 1: Configure media flow around

Configure the CUBE to support MFA.

voice service voip

media flow-around

Step 2: Remove media binding

Remove the media binding(s) if present. The media binding may be found in the global voice

service voip -> sip section of the configuration and/or in the dial-peers. Both locations must be

checked. For simplicity, only one dial–peer is shown in the example below.

voice service voip

sip

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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no bind media source-interface <appropriate interface>

dial-peer voice 100 voip

no voice-class sip bind media source-interface <appropriate interface>

Router configuration output:

voice service voip

address-hiding

mode border-element

media flow-around

allow-connections sip to sip

redirect ip2ip

fax protocol pass-through g711ulaw

sip

header-passing

error-passthru

asserted-id pai

no update-callerid

early-offer forced

midcall-signaling passthru

privacy-policy passthru

g729 annexb-all

dial-peer voice 100 voip

description "Outgoing To AT&T"-AT&T facing side

destination-pattern 1T

session protocol sipv2

session target ipv4:207.242.225.210 23

voice-class codec

voice-class sip asymmetric payload full

voice-class sip asserted-id pai

voice-class sip privacy-policy passthru

voice-class sip early-offer forced

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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voice-class sip profiles 1

voice-class sip bind control source-interface <appropriate interface>

dtmf-relay rtp-nte

fax-relay sg3-to-g3

fax rate 14400

fax protocol pass-through g711ulaw

no vad

NOTE: Please remember to remove the media binding(s) if present.

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

12

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Acronyms

Acronym

Translation

ADSL

Asymmetric Digital Subscriber Line

AIM

Advanced Integration Module A

AS

Autonomous System

ATM

Asynchronous Transfer Mode

AT&T VPN

AT&T Virtual Private Network

BC

Committed Burst

BE

Excess Burst or Best Effort

BGP

Border Gateway Protocol

BH

Bursty High

BL

Bursty Low

BOE

Branch Office Extension

CAS

Channel Associated Signaling

CBWFQ

Class Based Weighted Fair Queuing

CCG

Customer Configuration Guide

CCS

Common Channel Signaling

CDR

Committed Data Rate

CEF

Cisco Express Forwarding

CER

Customer Edge Router

CHAP

Challenge Handshake Authentication Protocol

CIR

Committed Information Rate

CLI

Command Line Interface

CM

Communications Manager

COS

Class of Service

CPE

Customer Premise Equipment

CPU

Central Processing Unit

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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Acronym

Translation

CRC

Cyclic Redundancy Check

CRTP

Compress Real Time Protocol

CSU/DSU

Channel Service Unit / Data Service Unit

CUBE

Cisco Unified Border Element

CUCM

Cisco Unified Communications Manager

DID

Direct Inward Dial

DS

Down Stream

DSCP

Differentiated Service Code Point

DSL

Digital Subscriber Line

DSP

Digital Signal Processors

DTMF

Dual Tone Multi Frequency

E&M

Ear & Mouth

EF

Expedient Forwarding

ePVC

Enhanced Permanent Virtual Circuit

FR

Frame Relay

FXO

Foreign Exchange Office

FXS

Foreign Exchange Station

GSM FR

Global System for Mobile communications Full Rate

HDV

High Density Voice

HWIC

High-speed WAN Interface Card

IAR

Inbound Alternate Routing

IETF

Internet Engineering Task Force

IMA

Inverse Multiplexing over ATM

IOS

Internetwork Operation System

IP

Internet Protocol

IPBE

Internet Protocol Border Element

IPSEC

Internet Protocol Security

ISR

Integrated Services Router

ITU-T

International Telecommunication Union - Telecommunications

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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Acronym

Translation

GW

Gateway

LAN

Local Area Network

LFI

Link Fragmentation and Interleaving

LLQ

Low Latency Queuing

LD

Long Distance

MFA

Media Flow Around

MGCP

Media Gateway Control Protocol

MLPPP

Multi-Link Point-to-Point Protocol

MM

Multi Media

MOW

Most Of World

MRG

Media Resource Group

MRGL

Media Resource Group List

MTP

Media Termination Point

MTU

Maximum Transmission Unit

NAT

Network Address Translation

NET

Network Equipment Technologies

NM

Network Module

NPE

Network Processing Engine

NTE

Named Telephone Event

OAM

Operation Administration & Maintenance

OCS

Office Communication Server

PA

Port Adapter

PAT

Port Address Translation

PBX

Private Branch Exchange

PC

Personal Computer

PCR

Peak Cell Rate

PER

Provider Edge Router

POS

Packet over SONET

POTS

Plain Old Telephone Service

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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Acronym

Translation

PPP

Point-to-Point Protocol

PQ

Priority Queue

PRI

Primary Rate Interface

PSAP

Public Safety Answering Point

PSTN

Public Switched Telephone Network

PVC

Permanent Virtual Circuit

PVDM

Packet Voice DSP Module

QOS

Quality of Service

QSIG

Q Signaling

RC

Receive

RFC

Request for Comment

RT

Real Time

RTCP

Real Time Control Protocol

RTP

Real Time Protocol

SBC

Session Border Controller

SCCP

Skinny Call Control Protocol

SCR

Sustainable Cell Rate

SHDSL

Single-Pair High-Speed Digital Subscriber Line

SIP

Session Initiation Protocol

SM

Session Manager

SPE

Synchronous Payload Envelope

TAC

Technical Assistance Center

TC

Time Interval

TDM

Time Division Multiplexing

TN

Telephone Number

TX

Transmit

UDP

User Datagram Protocol

US

Up Stream or United States

VAD

Voice Activity Detection

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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Acronym

Translation

VCI

Virtual Circuit Identifier

VLAN

Virtual Local Area Network

VNI

Voice Network Infrastructure

VoIP

Voice over Internet Protocol

VPI

Virtual Path Identifier

VPN

Virtual Private Network

VT

Virtual Template

WAN

Wide Area Network

WFQ

Weighted Fair Queuing

WIC

WAN Interface Card

AT&T IP Flexible Reach Service on AT&T MIS Service

Cisco Unified Border Element (CUBE)

Customer Configuration Guide for

Media Flow Around with AT&T Certified IP-PBX Solutions

(February 16, 2016, Version 1.0)

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respective owners.

This Customer Configuration Guide ("CCG") is offered as a convenience to AT&T's customers.

The specifications and information regarding the product in this CCG are subject to change

without notice. All statements, information, and recommendations in this CCG are believed to

be accurate but are presented without warranty of any kind, express or implied, and are

provided “AS IS”. Users must take full responsibility for the application of the specifications and

information in this CCG.

In no event shall AT&T or its suppliers be liable for any indirect, special, consequential, or

incidental damages, including, without limitation, lost profits or loss or damage arising out of the

use or inability to use this CCG, even if AT&T or its suppliers have been advised of the

possibility of such damage.