Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

You may experience some slow load times, errors, and slight inconsistencies. We ask for your patience as we finalize the launch. Thank you.

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our beta test area to get started.

New Member

Cisco building blocks for VoIP

Newbie here looking for some basic advice on moving from a TDM PBX to a Cisco VoIP system. What are the basic Cisco building blocks to serve VoIP and PSTN calls? We don't have anyhing fancy like ACDs, just a PBX with some hunt groups and DDIs.

Thanks,

Simon

  • Video Over IP
1 REPLY
Silver

Re: Cisco building blocks for VoIP

Hi, you can read the design guide for ip telephony at:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_book09186a00806e8a79.html

Here you have all the info you need, but basically you have to kept in mind:

- Network infraestructure: QoS.

- CallManager: depends on the numbers of users and apps you'll need a different model MCS-7815, MCS-7825, ... A minimum of two servers (one publisher and one subscriber) to have redundancy.

- Gateway: interconnect PSTN with you ip telephony systems.

- Ip phone models.

- Other apps: with ccm you can have hunt group, but perhaps you need voice mail with cisco unity.

Anyway, at the guide you have all the information you need.

Regards

Hope this helps, if so rate the post.

206
Views
3
Helpful
1
Replies