642-432 무료 덤프문제 온라인 액세스

Examine the example output.
hostname GW1 ! interface Ethernet 0/0 ip address 172.16.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2 h323-gateway voip h323-id GW1 h323-gateway voip bind srcaddr 172.16.2.1 ! dial-peer voice 1 voip destination-pattern 1212. session-target ras ! dial-peer voice 2 pots destination-pattern 2125551212 no register e164 !
end
Choose the command that will restore communication with gatekeeper functionality to this device.

• A.gateway
• B.h323-gateway voip bind srcaddr 172.16.2.2
• C.h323-gateway voip GW1-zone2.abc.com abc.com ipaddr 172.16.2.1
• D.h323-gateway voip h323-id GK1

You have a pair of voice enabled routers capable of supporting only medium complexity codecs. You need to conserve bandwidth on WAN links without major impact to call quality. Which two codecs will satisfy these requirements? (Choose two.)

• A.G.729ab
• B.G.729a
• C.G.729b
• D.G.729

In a VoIP environment when speech samples are framed every 20 ms, a payload of 20 bytes is generated. Assuming a total packet length of 60 bytes, what is the length of the packet header if cRTP is deployed without redundancy checks?

• A.40 bytes
• B.3 bytes
• C.1 byte
• D.2 bytes
• E.4 bytes
• F.20 bytes

LAB

Examine the following PBX system parameters:
The calling side seizes the line by going off-hook on its E-lead and sends information as DTMF digits.
The voice path is 4-wires, and the voice enabled router is in another building from the PBX.
Select the correct set of commands to allow communication between a voice enabled router and a PBX.

• A.voice port 1/0/0 signal immediate-start operation 4-wire type 4
• B.voice-port 1/0/0 signal delay-dial operation 4-wire type 1
• C.voice port 1/0/0 signal immediate-start operation 4-wire type 2
• D.voice port 1/0/0 signal wink-start operation 4-wire type 3

Which type of signaling is DTMF?

• A.supervisory
• B.informational
• C.address
• D.route