Configuring H.323-to-H.323 Interworking
H.323-to-H.323 aperture agreement provides a network-to-network bound point
between absolute VoIP and video networks for billing, security, call-admission control,
QoS, and signaling interworking. It performs best of the functions of a PSTN-to-IP
gateway but joins two H.323 VoIP alarm legs.
Figure 9-15 shows a sample book acclimated to configure H.323-to-H.323 interworking for
a Cisco UBE router. The Cisco Unified Communications Manager array in San Jose is
connected with the Cisco Unified Communications Manager Express router in Chicago
using a Cisco UBE router.
To configure H.323-to-H.323 interworking amid a Cisco Unified Communications
Manager array and a Cisco Unified Communications Manager Express gateway, follow
these steps:
Step 1. Enable H.323-to-H.323 interworking.
Step 2. Configure the H.323 punch aeon on the Cisco UBE router to acquiesce alarm routing
between the Cisco Unified Communications Manager array and Cisco
Unified Communications Manager Express router.
Figure 9-15 H.323-to-H.323 Interworking Scenario
Step 1: Enabling H.323-to-H.323 Interworking
By default, a Cisco IOS aperture will not acquiesce access amid two VoIP dial
peers. To change this behavior and acquiesce H.323-to-H.323 connections, use the allowconnections
h323 to h323 command in articulation account agreement mode, as apparent in
Example 9-2.
Example 9-2 Enabling H.323 Protocol Interworking
540 Authorized Self-Study Guide: Cisco Articulation over IP (CVOICE)
IP IP IP IP
IP WAN
H.323
R1
Cisco UBE
Phone1-1
2001
Phone1-2
2002
Phone3-1
3001
Phone3-2
3002
San Jose
Chicago
H.323
Cisco Unified
Communications Manager
Express: 192.168.2.254
Cisco Unified Communications
Manager Cluster: 192.168.1.1
V
Router(config)#voice account voip
Router(config-voice-service)#allow-connections h323 to h323
Step 2: Configuring H.323 Punch Peers
After H323-to-H323 calls accept been allowed, configure the adapted punch aeon to
route amid the Cisco Unified Communications Manager array and the Cisco Unified
Communications Manager Express router. No appropriate agreement on the punch aeon is
required. Example 9-3 illustrates this dial-peer configuration.
Example 9-3 H.323 Punch Peers
Router(config)#dial-peer articulation 2001
Router(config-dial-peer)#description To Cisco Unified Communications Manager
Router(config-dial-peer)#destination-pattern 2...
Router(config-dial-peer)#session-target ipv4:192.168.1.1
Router(config-dial-peer)#exit
Router(config)#dial-peer articulation 3000
Router(config-dial-peer)#description To Cisco Unified Communications Manager Express
Router(config-dial-peer)#destination-pattern 3...
Router(config-dial-peer)#session-target ipv4:192.168.2.254