Polycom RealPresence Resource Manager System Operations Guide Call Information
150 Polycom, Inc.
Call Information
The Call Info in the Device Details section includes the following fields.
Device ISDN Type The ISDN network interface type installed in the device.
Possible values include:
• ISDN_QUAD_BRI
• ISDN_PRI_T1
• ISDN_BRI
• ISDN_UNKNOWN
This field is blank for the following device types: RMX,
GW/MCU, Other, and TANDBERG.
Field Description
Field Description
Call Type The connection protocol for the call in which the device is
participating. Possible values include: H.323, H.320, and
SIP.
Video Protocol The video connection protocol, both transmission (Tx)
and reception (Rx), the device is using. Possible values
include:
• H.261
H.261 is an ITU standard designed for two-way
communication over ISDN lines and supports data
rates which are multiples of 64Kbit/s. H.261 supports
CIF and QCIF resolutions.
• H.263
H.263 is based on H.261 with enhancements that
improve video quality over modems. It supports CIF,
QCIF, SQCIF, 4CIF and 16CIF resolutions.
• H.264
Video Format The video format, both transmission (Tx) and reception
(Rx), the device is using.
Audio Protocol The audio connection protocol, both transmission (Tx)
and reception (Rx), the device is using. Possible values
include:
• G.711
• G.722
• G.728
