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Chapter 5: Phonebook Configuration
Multi-Tech Systems, Inc. 84
Add/Edit Outbound Phone Book: Field Definitions (continued)
Field Name
V
alues Description
SIP Fields
Use Proxy Y/N Select if proxy server is used.
Transport
Protocol
TCP or
UDP
VOIP administrator must choose between UDP and TCP transmission
protocols. UDP is a high-speed, low-overhead connectionless protocol
where data is transmitted without acknowledgment, guaranteed delivery,
or guaranteed packet sequence integrity. TCP is slower connection-
oriented protocol with greater overhead, but having acknowledgment and
guarantees delivery and packet sequence integrity.
SIP Port
Number
5060 or other
*See RFC 3087 (“Control of
Service Context using SIP
Request-URI,” by the
Network Working Group).
The SIP Port Number is a UDP logical port number. The VOIP will “listen”
for SIP messages at this logical port. If SIP is used, 5060 is the default,
standard or “well known” port number to be used. If 5060 is not used, then
the port number used is that specified in the SIP Request URI (Universal
Resource Identifier).
SIP URL sip.userphone@hostserver,
where “userphone” is the
telephone number and
“hostserver” is the domain
name or an address on the
network
Looking similar to an email address, a SIP URL identifies a user's
address.
In SIP communications, each caller or callee is identified by a SIP URL:
sip:user_name@host_name. The format of a sip URL is very similar to an
email address, except that the “sip:“ prefix is used.
SPP Fields
The –SS series of MultiVOIPs do not support SPP
Use
Registrar
Y/N
Select this checkbox to use registrar when VOIP system is operating in
the “Registrar/Client” SPP mode. In this mode, one VOIP (the registrar, as
set in Phonebook Configuration screen) has a static IP address and all
other VOIPs (clients) point to the registrar’s IP address as functionally
their own. However, if your VOIP system overall is operating in
“Registrar/Client” mode but you want to make an exception and use Direct
mode for the destination pattern of this particular Add/Edit Phonebook
entry, leave this checkbox unselected. Also do not select this if your
overall VOIP system is operating in the Direct SPP mode – in this mode
all VOIPs are peers with unique static IP addresses.
Port Number numeric When operating in “Registrar/Client” mode, this is the port by which the
gateway receives all SPP data and control messages from the registrar
gateway. (This ability to receive all data and messages via one port
allows the VOIP to operate behind a firewall with only one port open.)
When operating in “Direct” mode, this is the Port by which peer VOIPs
receive data and messages.
Alternate
Phone
Number
numeric Phone number associated with alternate IP routing.
Remote
Device is
[legacy
VOIP]
Y/N When checked, this MultiVOIP can operate with ‘first-generation’
MultiVOIP units in the same IP network. These include MVP-
110/120/200/400/800.
This is not available for the –SS series of MultiVOIPs.
Advanced
button
Gives access to secondary screen where an Alternate IP Route can be specified for backup or
redundancy of signal paths. For SIP & H.323 operation only.