5 MATERIAL Y MÉTODOS 5.1 MATERIAL

as its gateway protocol.

1. First, configure an IP address on the VG200’s Ethernet interface and enable the interface:

76 Chapter 3 • AVVID Gateway Selection

router(config)#interface fastethernet 0/0

router(config-if)#ip address 10.7.1.252 255.255.255.0 router(config-if)#no shut

2. Next, assign a unique name to the VG200 so the CallManager server can identify it:

router(config)#hostname DNVRVG200a

This is how CallManager keeps track of the MGCP network devices it is communicating with.This name must be unique.

3. Configure the VG200 to run MGCP as a signaling protocol.

DNVRVG200A(config)#mgcp

4. Configure the IP address (or DNS Name) for the CallManager server:

VG200(config)#mgcp call-agent 10.7.1.1

5. Select the CODEC type and the DTMF relay function:

DNVRVG200A(config)#mgcp dtmf-relay codec all mode out-of-band

6. To enable support for Cisco CallManager within MGCP, enter the following command:

DNVRVG200A(config)#ccm-manager mgcp

N

Use the command show voice port to determine the type of ports the VG200 has and which order they are installed in.

7. Bind the MGCP application to the voice ports.

■ _{FXO Port:}

DNVRVG200A(config)#dial-peer voice 1 pots DNVRVG200A(config)#application MGCPAPP DNVRVG200A(config)#port 1/0/0

■ _{FXO Port:}

AVVID Gateway Selection • Chapter 3 77

DNVRVG200A(config)#application MGCPAPP DNVRVG200A(config)#port 1/0/1

■ _{FXS Port:}

DNVRVG200A(config)#dial-peer voice 3 pots DNVRVG200A(config)#application MGCPAPP DNVRVG200A(config)#port 1/1/0

■ _{FXS Port:}

DNVRVG200A(config)#dial-peer voice 4 pots DNVRVG200A(config)#application MGCPAPP DNVRVG200A(config)#port 1/1/1

N

In some Cisco IOS versions, the application MGCPAPP command is case- sensitive. As a precaution, always enter this command in uppercase. Make certain the voice ports are enabled as well. Executing the com- mand no shut enables both ports on a VIC.

■ _{FXO Port:} DNVRVG200A(config)#voice-port 1/0/0 DNVRVG200A(config-voiceport)#no shut ■ _{FXS Port:} DNVRVG200A(config)#voice-port 1/1/0 DNVRVG200A(config-voiceport)#no shut

■ _{Under Dial Peers:}

destination-pattern session-target

■ _{Under Voice Ports:}

connection { plar | tie line | trunk }

78 Chapter 3 • AVVID Gateway Selection

W

The commands listed for Under Dial Peers and Under Voice Ports should not be configured in the MGCP gateway for MGCP-managed endpoints (those with application MGCAPP command in their dial-peer statement). It will cause communication problems with your CallManager.

8. The VG200 is configured to communicate with the CallManager server. It will periodically send out messages attempting to establish a connec- tion.When the CallManager server configuration is complete, the con- nection should automatically establish itself.

9. The following is the complete configuration for the VG200 router, DNVRVG200A, for this document:

DNVRVG200A#show running-config Building configuration...

Current configuration : 1244 bytes !

version 12.1

no service single-slot-reload-enable no service pad

service timestamps debug uptime service timestamps log uptime no service password-encryption !

hostname DNVRVG200A !

boot system flash boot system rom

boot system tftp vg200 10.7.1.253 no logging buffered

logging rate-limit console 10 except errors no logging console

enable secret jUie9834/#@skui enable password #####

AVVID Gateway Selection • Chapter 3 79 ! ip subnet-zero no ip finger no ip domain-lookup ! mgcp mgcp call-agent 10.7.1.1

mgcp dtmf-relay codec all mode out-of-band mgcp sdp simple call rsvp-sync ! ! ! ccm-manager mgcp ! ! interface FastEthernet0/0 ip address 10.7.1.252 255.255.0.0 no ip mroute-cache speed auto full-duplex ! ip default-gateway 10.7.1.254 ip classless no ip http server !

snmp-server engineID local 000000090200000196983000 snmp-server community public RO

! voice-port 1/0/0 ! voice-port 1/0/1 ! voice-port 1/1/0 ! www.syngress.com

80 Chapter 3 • AVVID Gateway Selection

voice-port 1/1/1 !

dial-peer voice 1 pots application mgcpapp port 1/0/0

!

dial-peer voice 2 pots application mgcpapp port 1/0/1

!

dial-peer voice 3 pots application mgcpapp port 1/1/0

!

dial-peer voice 4 pots application mgcpapp port 1/1/1

! !

line con 0

transport input none line aux 0 line vty 0 4 password ww login ! end DNVRVG200A#

Cisco MC3810

The Cisco MC3810 integrates data, voice, and video applications into a single box solution.The MC3810 supports voice connectivity using the following methods:Voice over Frame Relay (VoFR),Voice over ATM (VoATM), and VoIP. The interfaces supported by the 3810 are the following:

AVVID Gateway Selection • Chapter 3 81

■ _{Six analog ports (FXO, FXS, and E&M)}

■ _{Digital T1/E1 (Drop and Insert, CAS, CCS, and PRI QSIG)}

■ Ethernet 10Base-T

■ _{Two serial ports}

■ Four BRI voice ports

The analog interfaces are not compatible or interchangeable with Cisco’s 1750, 2600, and 3600 routers.The MC3810 can interface with the PSTN or PBX via digital connection.The digital T1 PBX connection supports 24 channels for voice with the following compression CODECs: G.723.1, G.729, G.729a, and G.726.This router provides similar Voice over X functionality as these routers, in addition it has video capability such as circuit emulation over ATM, and H.323 gatekeeper for Video over IP.The MC3810 video features allow organizations to get rid of H.320 ISDN dial-up circuits.

Cisco 7200/7500

For enterprises seeking a high capacity and performance VoIP solution, the 7200 series routers are a viable choice.The Cisco 7200 with six slots can be equipped with up to 20 T1s or 18 E1s, supporting voice-over-packet applications.The DS0 channel from a T1/E1 is switched into the Digital Signal Processor (DSP) to per- form the TDM-to-packet conversion of the bearer information present on a DS0, while the Cisco 7200 router supports two types of port adapters, one with DSPs and one without.The adapters without DSPs can use DSPs from the other DSP-capable adapters.The PA-MCX-2/4/8 TE1 is a non-DSP adapter and works with the PA-VXx-2TE1+ type adapters.The PA-VXx-2TE1+ adapters, on the other hand, provide up to two T1 or E1 interfaces.Table 3.7 lists the number of voice channels supported, based on the CODEC complexity.

Table 3.77200 T1/E1 Voice Port Adapters

High-Complexity Medium-Complexity

Product Voice Channels Voice Channels

PA-VXB-2TE1+ 24 48

PA-VXC-2TE1+ 60 120

82 Chapter 3 • AVVID Gateway Selection

When installing multiple T1 or E1 voice port adapters, you must use a com- bination of the PA-VXB-XXX and PA-MCX-XXX adapters in order to share the DSP resources.Table 3.8 lists the Cisco IOS release supported on the given platform for the given digital signaling protocol.

Table 3.87200/7500 Signaling Protocols

Signaling Protocol 7200 7500

CAS T1 12.0(5)XE3, 12.0(7)XK, 12.1(1)T* 12.1(3)T

CAS E1 12.0(5)XE3* 12.1(3)T

Q.SIG 12.0(7)XK*, 12.1(2)T 12.1(3)T PRI Q.931 User Side 12.1(3)T 12.1(3)T PRI Q.931 Network Side 12.1(3)T 12.1(3)T

R2 Signaling 12.1(3)T 12.1(3)T

Transparent CCS 12.1(3)T 12.1(3)T

Feature Group D 12.1(4)T 12.1(4)T

Multi-D Channel 12.1(3)T 12.1(3)T

RAI Future Future

N

IOS Releases 12.1(3)T and earlier are supported on digital voice port adapters PA-VXC-2TE1, PA-VXB-2TE1. IOS Releases 12.1(2)T and later are supported on the enhanced digital voice port adapters PA-VXC-2TE1+ and PA-VXB-2TE1+.

The 7200 can perform as a high density H.323 AVVID gateway with a con- nection to the PSTN and PBX, providing digital connection to both the PSTN and PBX (as illustrated in Figure 3.1).