Why would you use media flow-around?


You use media flow-around mode when you are not concerned with hiding your address. Because the IPIPGW is only involved in call setup and does not have to process media streams, more calls can be supported.


What is needed to implement an IPIPGW?


You need a supported router platform, an IPIPGW Cisco IOS image, and an integrated voice video feature license to implement an IPIPGW.


What is a via-zone?


A via-zone is a local zone that has been dedicated to only service IPIPGWs. Although it is not necessary to have a dedicated zone for the IPIPGW, it is often much simpler to troubleshoot networks in which we have an dedicated IPIPGW zone.


Under what circumstances is a DSP needed in an IPIPGW call?


A DSP is needed if the two call legs do not use the same codec or packet size. If the call legs use identical parameters, a DSP is not required.


What platforms are supported for the Cisco Multiservice IPIPGW?


The supported platforms are the Cisco ISRs (Cisco 2800, Cisco 3800), Cisco 2600XM Series (Cisco 2691, 2650XM, 2651XM, 2620XM, 2621XM, 2610XM, and 2611XM), Cisco 3700 Series (Cisco 3725, 3745), Cisco 7200 VXR, Cisco 7301, Cisco AS5350XM, and Cisco AS5400XM.


Can the Cisco Multiservice IPIPGW register to more than one gatekeeper?


No, it can register with only one gatekeeper. However, more than one gateway can register to one gatekeeper.


Can you use the Cisco Multiservice IPIPGW without a gatekeeper?


Yes, you can. You can run the Cisco Multiservice without a gatekeeper by configuring direct dial peers on the gateway.


Are translation rules and digit manipulation supported on the Cisco Multiservice IPIPGW?


Yes, they have the same support for translation rules and digit manipulation on VoIP dial peers as other Cisco H.323 gateways.

Part I: Voice Gateways and Gatekeepers

Gateways and Gatekeepers

Part II: Gateways

Media Gateway Control Protocol


Session Initiation Protocol

Circuit Options

Connecting to the PSTN

Connecting to PBXs

Connecting to an IP WAN

Dial Plans

Digit Manipulation

Influencing Path Selection

Configuring Class of Restrictions

SRST and MGCP Gateway Fallback

DSP Resources

Using Tcl Scripts and VoiceXML

Part III: Gatekeepers

Deploying Gatekeepers

Gatekeeper Configuration

Part IV: IP-to-IP Gateways

Cisco Multiservice IP-to-IP Gateway

Appendix A. Answers to Chapter-Ending Review Questions


Cisco Voice Gateways and Gatekeepers
Cisco Voice Gateways and Gatekeepers
ISBN: 158705258X
EAN: 2147483647
Year: 2004
Pages: 218

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