User's Manual

66 Administering Avaya Video Conferencing Solution 6.0.1 Issue 2.1 April 15, 2011
Administering SIP stations
This procedure explains the procedure to set up stations on Communication Manager.
1. On SAT, enter add station n and set the following parameters:
● Type : 46n / 96n, where n is the number of your station type. For example, if you use 46n
as the Type, the system generates minor alarms for these stations. You may ignore these
alarms. However, if the Type is set to any of the DCP phone types, such as 6400 or 8400,
undesirable interactions with the TTI and other features may occur. Avaya recommends
only 46n station type, such has 4620SIP or 4620SIPCC, even if you have a 96n phone.
2. Enter change off pbx-telephone-set and set the following parameters:
● Configuration Set Description to SIP phone.
3. Enter change off-pbx station mapping and add station mapping data for SIP
endpoints.
SIP Limitations
● In a mixed H.323/SIP environment, ensure all H.323 bridges accessible to SIP video users
are not MGCs. If they are, SIP video users will not receive video when dialing into an
H.323 MGC. Upgrading to the Polycom RMX bridge will enable video for SIP users.
● Ensure all route patterns containing SIP video trunks do not rely on the multimedia bearer
capability being set. Multimedia bearer capability is not set for SIP video calls. As a result,
SIP video calls will route as audio only.
● Ensure the signaling groups at either end of the SIP trunk have priority video enabled if
desired priority bandwidth is desired. Separate sub-domain names may be used to
separate priority and normal users. SIP has no means to signal a priority video call over a
trunk. A system that receives a call on a priority trunk will always be allocated bandwidth
from the priority pool.
● Ensure all non-Avaya SIP video enpoints have DevConnect certification. Communication
Manager places specific requirements on SIP endpoints to ensure seamless inter-working
between SIP/H.323 with full access to enterprise features. Avaya recommends that users
of uncertified SIP video equipment disable video on the device when calling into the Avaya
video telephony solution.
● SRTP media encryption is not supported simultaneously with SIP video. Video is disabled
for any calls that require audio encryption. If video is required without security, then ensure
that users are assigned a codec-set without SRTP media encryption using
ip-network-region segmentation