Yealink SIP-T48G Administrator's Manual page 574

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
Format
Default Value
Range
Example
This section describes how Yealink IP phones comply with the IETF definition of SIP as
described in RFC 3261.
560
For programable keys:
X=1-10, 12-14 (for SIP-T48G/T46G)
X=1-10, 13 (for SIP-T42G/T41P)
X=1-14 (for SIP-T29G/T27P)
X=1-10, 14 (for SIP-T23P/T23G/T21(P) E2)
When the key feature is configured as Local
Group, valid values are:
0-All contacts
1-First local group
...
5-Fifth local group
...
48-Forty-eighth local group
When the key feature is configured as XML
Group (remote phone book), valid values are:
0-First XML group
1-Second XML group
...
4-Fifth XML group
When the key feature is configured as Network
Group, valid values are:
0-All contacts
1-Group
2-Enterprise
3-GroupCommon
4-EnterpriseCommon
5-Personal
Integer
0
0 to 48
Configures the second remote phone book.
linekey.1.xml_phonebook = 1