Category Archives: Gateway

Configuring Secure SCCP VG224 (VG2XX) Over TLS with CUCM

1    INTRODUCTION This report explains and gives the steps to be done to activate secure VG224 as SCCP , on this report I use the router as Certificate authority (CA) , if you use third party CA , there will … Continue reading

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Gatekeepers Scenarios -Part 3

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Gatekeepers Scenarios -Part 2

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Gatekeepers Scenarios -Part 1

Scenario 1 In this scenario there are 2 local zones (LanguedocRoussillon and MidiPyrenees) , in each zone there is one gateway. ps: a local zone can contain more than one gateways . Configuration Gatekeeper : gatekeeper zone local LanguedocRoussillon lab.com … Continue reading

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DSP Allocation

The following calculation are based on PVDM2 Router 2821 IOS V: 15.1(4)M1 PVDM Table PVDM Number of DSP pvdm2-8 1/2 DSP pvdm2-16 1 DSP pvdm2-32 2 DSP pvdm2-48 3 DSP pvdm2-64 4 DSP Conference Conference Codec Participants / dsp Sessions … Continue reading

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Fax Protocols

What is the difference between fax relay and pass-through ? Router(config-dial-peer)#fax protocol ? cisco Use Cisco proprietary protocol none No FAX protocol pass-through Use an audio codec for fax transport system Use choice specified in global fax protocol CLI t38 … Continue reading

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CAC On Voice Gateway/CME part 4

To read part 1 , click here To read part 2 , click here To read part 3 , click here To read part 4 , click here The Fall-back Method The main site has 2 dial-peers  for the same … Continue reading

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