vg224

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Oct 5th, 2007
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i would like to ask what is the different using mgcp or sccp control vg224. we will install analog phone, fax and modem in vg224. so i would like to know which protocol use.

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Rob Huffman Fri, 10/05/2007 - 05:00
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Hi Mike,


I think that you would want to use SCCP (not MGCP),due to the fact that SCCP has support for many common Telephony features;


Check out Table 1 from this VG224 doc;


http://www.cisco.com/en/US/products/hw/gatecont/ps2250/products_data_sheet09186a00801d87f6.html


This is also an excellent doc;


SCCP Controlled Analog (FXS) Ports with Supplementary Features in Cisco IOS Gateways


http://www.cisco.com/en/US/products/ps6441/products_feature_guide09186a0080483a76.html

Chris Deren Sun, 10/07/2007 - 11:13
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My rule of thumb here is the following:

- if you require supplementary services for analog phones go with SCCP

- if most of your devices are faxes go with H.323 or MGCP, as SCCP does not work well with faxes, the one drawback to H.323 is lack of secondary dialtone, and MGCP is lack survivability



HTH,


Chris

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