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Design and Deployment Checklist
18 Avaya Video Telephony Solution Networking Guide
Network and PBX-Network Requirements
Question 1: Has a multimedia QoS policy been designed and deployed?
Yes.
No. Avoid best effort treatment of video. Avaya IP Softphone (IPSP), Polycom MGC,
Polycom RMX, and Polycom VSX all support QoS for video. See the checklist in section 11.0 of
the white paper from Polycom Global Services titled “Supporting Real-time Traffic: Preparing
Your IP Network for Video Conferencing.”
Question 2: Has a default enterprise Maximum Call Rate been selected?
Note:
Note: Use change ip-codec-set and enable “Allow Direct IP Multimedia” on page 2 of
the form. In Avaya Communication Manager Release 4.0, there are two options:
Normal users and Priority users.
Yes.
No. Recommend initial deployment with Maximum Call Rate of 384 Kbps.
Note:
Note: Keep in mind the following:
- Allow for 20% for IP protocol overheads.
- High definition room systems support call rates of 4 Mbps.
Question 3: Is inter-PBX network connectivity less than 150 ms end-to-end
one-way delay and less than 1% packet loss at all times?
Yes.
No. Expect slower call establishment. Compared to audio-only calls, multimedia calls have
a greater number of round-trip signaling messages by a factor of 5.