Avaya Communication Manager Administrator's Manual page 1230

Screen Reference
Cntry/Peer Protocol
Tells call processing software which ISDN protocol standard is applied.
Valid entries
1 to 25
etsi
QSIG
blank
Interface
Valid entries
network
peer-master
Side
Valid entries
a
b
1230 Administrator Guide for Avaya Communication Manager
Usage
When this field is 10, 12, or 13, the Protocol Version field is equivalent to
b on the DS1 Circuit Pack screen.
When this field is etsi, the Protocol Version field is equivalent to b on the
DS1 Circuit Pack screen.
When the Interface field is peer-master, this field must be QSIG.
You cannot leave this field blank if the Interface field is set to a valid,
non-blank value.
Usage
Tells call processing software whether a particular port is connected to a
user/network or a peer interface. These entries are valid for the TN556B.
You can enter peer-master only if the QSIG Basic Call Setup feature is
enabled
Usage
Determines how glare conditions are handled when Interface field is
peer-slave. This field is not administrable when the Interface field is
network.