IP phone 7811 Regirtation In Progress issue at remote Site

[uz]

Hi All,

we have installed IP Phones 7811 at our remote site. And IP Phones working fine but sometime they gone registration is progress can any one tell me the required bandwidth or latency rate(ms) required between CUCM and IP phones.

Thanks in Advance

[Georgios Fotiadis]

This will answer your questions: Quality of Service Design Overview

You should provision QoS for your WAN giving priority to voice (bearer and signaling) traffic.

Quality of Service for Voice over IP