Avaya G350+S8300 Installing And Configuring

Avaya Solution & Interoperability Test Lab

Configuring Avaya Communication Manager, Cisco 2811
Gatekeeper and Cisco CallManager to Control VoIP Calls
between Avaya and Cisco Telephones - Issue 1.0

Abstract

These Application Notes describe a configuration, including, Avaya Communication Manager,
a Cisco 2811 Gatekeeper, and Cisco CallManager that was verified for a customer proof of
concept request. In this configuration, Avaya Communication Manager and Cisco
CallManager are registered with the Cisco 2811 Gatekeeper, which provides call control
between Avaya Communication Manager and Cisco CallManager.

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ACM-Cisco-CM-GK.doc

1. Introduction

An H.323 gatekeeper can provide address translation and network access control services for
H.323 terminals and gateways. These Application Notes present the configuration steps to allow
Avaya Communication Manager to communicate with Cisco CallManager via a Cisco 2811
Gatekeeper. These Application Notes will cover the necessary configuration steps for Avaya
Communication Manager, a Cisco 2811 Gatekeeper and Cisco CallManager.

Figure 1 depicts the network configuration utilized for these Application Notes.
In Location A in Figure 1, the Avaya G350 Media Gateway with S8300 Server provides both
H.323 Gateway (GW) and Gatekeeper (GK) functionality. In Location B, the Cisco 2811 access
router is configured as an H.323 Gatekeeper, and the Cisco CallManager is registered with it.
The Cisco 2811 GK provides E.164 to IP address resolution and call control for bandwidth
between the Location A and Location B.

The are two zones defined on this Gatekeeper, a local zone for Location B and a remote zone
for Location A. The Gatekeeper stays in Local zone. The following shows the basic flow for a
call from Location A to Location B:

• Avaya Communication Manager sends a Location Request (LRQ) message to the Cisco

2811 Gatekeeper.

• The Cisco 2811 Gatekeeper checks its dial plan and bandwidth requirement

• If the call meets the bandwidth requirement:

o The Cisco 2811 GK responds with location confirm (LCF) to Avaya

Communication Manager.

o Avaya Communication Manager will set up the call to the Cisco CallManager

through H.225 (Q.931) signaling.

• If the bandwidth requested exceeds the bandwidth requirement, the Cisco 2811

Gatekeeper sends call Location Rejection (LRJ) to Avaya Communication Manager to
deny the call.

Similarly, this call flow can be applied for call origination in Location B to Location A.

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ACM-Cisco-CM-GK.doc

Location A

Avaya S8300 Server with

G350 Media Gateway

IP: 22.1.1.22

Avaya 2420

Digital Telephone

x4501

MPLS WAN

Location B

Cisco 7960 IP Telephone

60.1.1.101
x61002

CISCO IP

796

PHONE

0

messagesdirectori

12

3

AB

DE

i

es

settingsservic

C

F

45

6

es

JK

MNOGH

L

I

78

9

TU

WXYZPQR

V

S

#

0

OPE

*

R

Cisco CallManager 4.1

Ethernet

T1 T1

Ethernet

Cisco Catalyst

3750

Avaya 4600

IP Telephone

X4550

22.1.1.101

Avaya 9630

IP Telephone

X4555

22.1.1.100

DHCP/TFTP

Server

Zone:

Remote

Zone:
Local

Cisco 2811

GateKeeper

60.1.1.10

CISCO IP

796

PHONE

0

messagesdirectori

12

3

AB

DE

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settingsservice

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Cisco 7970 IP Telephone

R

60.1.1.100
x61000

Figure 1: Network Diagram for these Application Notes

2. Equipment and Software Validated

The following equipment and software were used for the sample configuration provided:

Network Component Software Version

Avaya Communication Manager
S8300 Server with G350 Media Gateway
Avaya G350 Media Gateway 26.31

Avaya 9600 IP Telephone (H.323) 1.2.1
Avaya 4620 IP Telephone (H.323) 2.7
Cisco 2811 Gatekeeper 12.4(2)T5 (IP Voice)
Cisco CallManager 4.1(2)
Cisco Catalyst 3750 Switch 8.2.1
Cisco 7970/7960 IP Telephones 7.2

Table 1 - Network Component Software Versions

3.1.2 (634)

60.1.1.5

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ACM-Cisco-CM-GK.doc

3. Avaya Communication Manager Configuration

3.1. Configuring Node Names on the Avaya Communication Manager

This section presents configuration steps for node name to IP address mapping on Avaya
Communication Manager. It is assumed that appropriate license and authentication files have
been installed on the S8300 Server. It is also assumed that the network IP address on the S8300
Server has been configured to 22.1.1.22/24 and the IP address on the G350 GW has been
configured to 22.1.1.23/24.

Avaya Communication Manager SAT screens can be accessed using “telnet 192.11.13.6 5023”
from a computer connected to the services port, or “telnet 22.1.1.22 5023” through the network.

Use the command change node-names ip to display the mapping of node names to IP addresses.
The node name Call-Manager is mapped to Cisco CallManager’s IP address 60.1.1.5 and the
node name Cisco-GK is mapped to the Cisco 2811 router’s IP address 60.1.1.10. The procr is
mapped to the Avaya S8300 Server’s IP Address 22.1.1.22.

change node-names ip Page 1 of 1
IP NODE NAMES
Name IP Address Name IP Address

Call-Manager 60 .1 .1 .5 . . .
Cisco-GK 60 .1 .1 .10 . . .
procr 22 .1 .1 .22 . . .

3.2. Configuring IP Network Region

In this sample configuration, the IP network region 1 is configured for Location A and the IP
network region 2 is configured for Location B.

Use the command change ip-network-region 1 to specify the IP codec set to be used for
network region 1 and the IP codec set used between network region 1 and region 2. Page 1 of 19
shows that codec set 1 is used for network region 1. The fields under DIFFSERV/TOS
PARAMETERS and 802.1P/Q PARAMETERS are used for QoS. The Avaya IP telephone
will receive these QoS parameters upon registration.

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change ip-network-region 1 Page 1 of 19
IP NETWORK REGION
Region: 1
Location: Home Domain:
Name:
Intra-region IP-IP Direct Audio: no
AUDIO PARAMETERS Inter-region IP-IP Direct Audio: no
Codec Set: 1 IP Audio Hairpinning? n
UDP Port Min: 16384
UDP Port Max: 32767 RTCP Reporting Enabled? y
RTCP MONITOR SERVER PARAMETERS
DIFFSERV/TOS PARAMETERS Use Default Server Parameters? y
Call Control PHB Value: 34

Audio PHB Value: 46

802.1P/Q PARAMETERS
Call Control 802.1p Priority: 3
Audio 802.1p Priority: 6 AUDIO RESOURCE RESERVATION PARAMETERS

H.323 IP ENDPOINTS RSVP Enabled? n
H.323 Link Bounce Recovery? y
Idle Traffic Interval (sec): 20
Keep-Alive Interval (sec): 5

Keep-Alive Count: 5

Page 3 of 19 shows that calls between network region 1 and 2 are allowed, up to the 256:Kbps.
Calls above the specified limit will not be permitted, and may be re-routed to a different path.
The bandwidth usage is based on the packet size and codec selection. Avaya supports IP Call
Admission Control via Bandwidth Limits (CAC-BL). Codec set 2 is used for calls between
regions 1 and 2.

change ip-network-region 1 Page 3 of 19

Inter Network Region Connection Management

src dst codec direct Total Video Dyn
rgn rgn set WAN WAN-BW-limits WAN-BW-limits Intervening-regions CAC IGAR
1 1 1
1 2 2 y 256:Kbits 0:Kbits n

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Use the command change ip-network-region 2 to specify the IP codec set to be used for
network region 2 and the IP codec set used between network region 1 and region 2. Page 1 of 19
shows that codec set 2 is used for network region 2.

change ip-network-region 2 Page 1 of 19
IP NETWORK REGION
Region: 2
Location: Home Domain:
Name:
Intra-region IP-IP Direct Audio: no
AUDIO PARAMETERS Inter-region IP-IP Direct Audio: no
Codec Set: 2 IP Audio Hairpinning? n
UDP Port Min: 16384
UDP Port Max: 32767 RTCP Reporting Enabled? y
RTCP MONITOR SERVER PARAMETERS
DIFFSERV/TOS PARAMETERS Use Default Server Parameters? y
Call Control PHB Value: 34
Audio PHB Value: 46

802.1P/Q PARAMETERS
Call Control 802.1p Priority: 3
Audio 802.1p Priority: 6 AUDIO RESOURCE RESERVATION PARAMETERS
H.323 IP ENDPOINTS RSVP Enabled? n
H.323 Link Bounce Recovery? y
Idle Traffic Interval (sec): 20
Keep-Alive Interval (sec): 5

Keep-Alive Count: 5

Page 3 of 19 shows that calls between network region 2 and 1 are allowed, up to the 256:Kbps.
Calls above the specified limit will not be permitted, and may be re-routed to a different path.
The bandwidth usage is based on the packet size and codec selection. Avaya supports IP Call
Admission Control via Bandwidth Limits (CAC-BL). Codec set 2 is used for calls between
regions 2 and 1.

change ip-network-region 2 Page 3 of 19

Inter Network Region Connection Management

src dst codec direct Total Video Dyn
rgn rgn set WAN WAN-BW-limits WAN-BW-limits Intervening-regions CAC IGAR
2 1 2 y 256:Kbits 0:Kbits n
2 2 2

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ACM-Cisco-CM-GK.doc

Use the command change ip-codec-set x (where x is the codec-set number) to configure IP
codec(s). The following screens show the codec configuration. IP-codec-set 1 uses G.711MU
and ip-codec-set 2 uses G.729.

change ip-codec-set 1 Page 1 of 1
IP Codec Set
Codec Set: 1

Audio Silence Frames Packet
Codec Suppression Per Pkt Size(ms)
1: G.711MU n 2 20
2:

change ip-codec-set 2 Page 1 of 1
IP Codec Set

Codec Set: 2

Audio Silence Frames Packet
Codec Suppression Per Pkt Size(ms)

1: G.729 n 2 20

2:

3.3. Configuring Signaling and Trunk Groups to Cisco 2811
Gatekeeper

In order to configure Avaya Communication Manager as an H.323 Gatekeeper to send LRQ to
the Cisco 2811 GK, a signaling group for outbound traffic must be configured. Note that the IP
address of the Avaya S8300 Server (procr) functions as an IP address for both H.323 GW and
GK.

Use the command add signaling-group <group number> to create a signaling group. The Near­End Node Name and Far-end Node Name are configured to the procr and Cisco-GK
respectively. To configure the Avaya S8300 Server as a H.323 GK, LRQ required must be set to
y. Near-end Listen Port and Far-end Listen Port must be configured to 1719 (UDP port 1719 for
H.225 RAS). Direct IP-IP Audio Connections and IP Audio Hairpinning must be set to n for
successful media paths. Disabling Direct IP-IP and IP Audio hairpinning will establish the RTP
stream between the G350 Media Gateway and the Cisco IP Telephones for inter location calls.
To support out-of-band DTMF, DTMF over IP must be configured to out-of-band. To control
Codec Set selection, the Far-end Network Region is configured to 2. Note that this signaling
group is configured to be associated with the trunk group 20.

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add signaling-group 20 Page 1 of 5
SIGNALING GROUP

Group Number: 20 Group Type: h.323
Remote Office? n Max number of NCA TSC: 20
SBS? n Max number of CA TSC: 0
IP Video? n Trunk Group for NCA TSC:
Trunk Group for Channel Selection: 20
Supplementary Service Protocol: a
T303 Timer(sec): 10

Near-end Node Name: procr Far-end Node Name: Cisco-GK
Near-end Listen Port: 1719 Far-end Listen Port: 1719
Far-end Network Region: 2
LRQ Required? y Calls Share IP Signaling Connection? n
RRQ Required? n H245 Control Addr On FACility? n
Media Encryption? n Bypass If IP Threshold Exceeded? n
H.235 Annex H Required? n
DTMF over IP: out-of-band Direct IP-IP Audio Connections? n
IP Audio Hairpinning? n
Interworking Message: PROGress
DCP/Analog Bearer Capability: 3.1kHz

Use the command add trunk–group <group number> to add an IP trunk group. The following
screen shows the configuration of the IP trunk group 20. As a standard IP trunk configuration,
Group Type is configured to isdn, Carrier Medium to H.323 and Service Type to tie.

add trunk-group 20 Page 1 of 21
TRUNK GROUP

Group Number: 20 Group Type: isdn CDR Reports: y
Group Name: TO Ciso-GK COR: 1 TN: 1 TAC: 120
Direction: two-way Outgoing Display? n Carrier Medium: H.323
Dial Access? n Busy Threshold: 255 Night Service:
Queue Length: 0
Service Type: tie Auth Code? n

Member Assignment Method: manual

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Note that Codeset to Send Display must be configured to 0 in order for the Cisco GW to accept
the Q.931 call setup message from the Avaya Media Gateway.

add trunk-group 20 Page 2 of 21
Group Type: isdn

TRUNK PARAMETERS
Codeset to Send Display: 0 Codeset to Send National IEs: 6
Charge Advice: none
Supplementary Service Protocol: a Digit Handling (in/out): enbloc/enbloc

QSIG Value-Added? n
Digital Loss Group: 18
Incoming Calling Number - Delete: Insert: Format: unk-pvt

In order to support caller ID on the IP trunk (isdn type), configure Send Name and Send Calling
Number to y. In the sample configuration, the Format is configured to unk-pvt.

add trunk-group 20 Page 3 of 21
TRUNK FEATURES
ACA Assignment? n Measured: none
Internal Alert? n Maintenance Tests? y
Data Restriction? n NCA-TSC Trunk Member:
Send Name: y Send Calling Number: y
Used for DCS? n Send EMU Visitor CPN? n
Suppress # Outpulsing? n Format: unk-pvt
UUI IE Treatment: service-provider

Replace Restricted Numbers? n
Replace Unavailable Numbers? n
Send Connected Number: n
Hold/Unhold Notifications? n
Send UUI IE? y Modify Tandem Calling Number? n
Send UCID? n
Send Codeset 6/7 LAI IE? y

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