When you use the show gatekeeper endpoints command on the gatekeeper, a Cisco
UBE router will be displayed as an H323-GW type. In the output shown in Example 9-9,
the Cisco UBE router is registered using the Loopback1 IP address 192.168.66.15.
Example 9-9 Verifying Cisco UBEs and Via-Zone Gatekeepers with the show
gatekeeper endpoints Command
Chapter 9: Establishing a Connection with an Internet Telephony Service Provider 547
GKIPIPGW#show gatekeeper endpoints
GATEKEEPER ENDPOINT REGISTRATION
================================
CallSignalAddr Port RASSignalAddr Port Zone Name Type Flags
--------------- ----- --------------- ----- --------- ---- -----
192.168.66.15 1720 192.168.66.15 58083 VIA H323-GW
H323-ID: IPIPGW
Voice Capacity Max.= Avail.= Current.= 0
192.168.1.254 1720 192.168.1.254 50220 SJC VOIP-GW
H323-ID: SJC-GW
Voice Capacity Max.= Avail.= Current.= 0
192.168.3.254 1720 192.168.3.254 51105 CHI VOIP-GW
H323-ID: CHI-GW
Voice Capacity Max.= Avail.= Current.= 0
Total number of active registrations = 3
When a call is active, the show gatekeeper calls command will display two call legs. The
first call leg, as illustrated in Figure 9-19 and Example 9-10, is between the originating
gateway (Router1 in this case) and the Cisco UBE router.
Router1
H.323 ID SJC-GW
Technology Prefix 1#
Router1 to Cisco UBE
Router3
H.323 ID CHI-GW
Technology Prefix 1#
Cisco UBE
Figure 9-19 Verifying Cisco UBEs and Via-Zone Gatekeepers Topology—Call Leg 1
Example 9-10 Verifying Cisco UBEs and Via-Zone Gatekeepers with the show
gatekeeper calls Command—Call Leg 1
GKIPIPGW#show gatekeeper calls
... OUTPUT OMITTED ...
LocalCallID Age(secs) BW
10-54685 10 16(Kbps)
Endpt(s): Alias E.164Addr
src EP: SJC-GW
CallSignalAddr Port RASSignalAddr Port
192.168.1.254 1720 192.168.1.254 50220
Endpt(s): Alias E.164Addr
continues
The second call leg, as illustrated in Figure 9-20 and Example 9-11, is between the Cisco
UBE router and the terminating gateway (Router3 in this case).
548 Authorized Self-Study Guide: Cisco Voice over IP (CVOICE)
dst EP: IPIPGW 3001
CallSignalAddr Port RASSignalAddr Port
192.168.66.15 1720 192.168.66.15 58083
... OUTPUT OMITTED ...
Router1
H.323 ID SJC-GW
Technology Prefix 1#
Cisco UBE to Router3
Router3
H.323 ID CHI-GW
Technology Prefix 1#
Cisco UBE
V
Figure 9-20 Verifying Cisco UBEs and Via-Zone Gatekeepers Topology—Call Leg 2
Example 9-11 Verifying Cisco UBEs and Via-Zone Gatekeepers with the show
gatekeeper calls Command—Call Leg 2
GKIPIPGW#show gatekeeper calls
... OUTPUT OMITTED ...
LocalCallID Age(secs) BW
11-54685 10 16(Kbps)
Endpt(s): Alias E.164Addr
src EP: IPIPGW 4001
CallSignalAddr Port RASSignalAddr Port
192.168.66.15 1720 192.168.66.15 58083
Endpt(s): Alias E.164Addr
dst EP: CHI-GW 3001
CallSignalAddr Port RASSignalAddr Port
192.168.3.254 1720 192.168.3.254 51105
... OUTPUT OMITTED ...
Example 9-10 Verifying Cisco UBEs and Via-Zone Gatekeepers with the show
gatekeeper calls Command—Call Leg 1 continued
Summary
The capital capacity covered in this affiliate are the following:
■ Cisco UBE routers interconnect assorted VoIP networks by acquisition calls between
two VoIP punch peers.
■ Appearance accommodate agreement interworking, abode hiding, codec filtering, and video
interworking.
■ Agreement interworking interconnects VoIP networks, application the aforementioned or altered signaling
protocols.
■ Media streams can breeze through or bypass a Cisco UBE router.
■ Cisco UBE routers use accepted Cisco IOS codec negotiations to access negotiations
between VoIP networks.
■ Cisco UBE routers can use RSVP to apparatus CAC, for example, amid Cisco
Unified Communications Manager clusters.
■ Cisco UBE routers can annals with gatekeepers and be acclimated as a accepted gateway
or with via-zones.
■ Cisco UBE alarm breeze depends on arrangement cartography and appearance implemented.
■ Agreement interworking is configured application the allow-connection command.
■ H.323-to-H.323 interworking is configured application the allow-connection h323 to
h323 command.
■ H.323-to-SIP interworking is configured application the allow-connection h323 to sip
command.
■ Media flow-through or flow-around can be configured globally or per punch peer.
■ Ensure that the entering and outbound punch aeon accept analogous media and codec
configurations.
■ Cisco UBE routers can be acclimated in affiliation with gatekeepers by registering them
in a via-zone.
■ A attendant will appearance two alarm legs back application a Cisco UBE router.
Chapter 9: Establishing a Connection with an Internet Telephony Service Provider 549