does MGCP have a maximum delay requirement

[dino-chirico]

Hi All,

In a senario where the call manager and gateway (mgcp) are connected over the WAN. Is the a maximum round trip delay for the MGCP router?

Thanks

[ronpatel]

Hi

MGCP will work over high delay paths and calls will be connected etc. What you need to consider however is the "Media Cut Through Delay" While a device is ringing, media is generally not flowing (RTP Packets)until the connected or off hook state. At which point the media is setup. This delay between off hook and RTP packets actually starting to flow causes clipping of the first word(s) of the call. This is generally a concern with call center agents.

If you start getting above 150ms one way delay, you should consider this.

Regards

Ronak patel

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