iPECS-LIK
Feature Description & Operation Manual Issue 6.0d1
403
− SIP Phone Self Programming - DTMF Type : INFO or a specific INFO type if
there is in select list.
4. By Provisioning for Ericsson-LG SIP Phone, DTMF Type of Phone is automatically
set to INFO Type. In that case, you do not need to set it by SIP Phone Self
Programming.
Network Related Configuration
1. MFIM IP address for WAN is different from original IP address for LAN
− Condition 1 : MFIM has firewall IP address or MFIM is port-forwarded by VOIM
WAN-U or other Switches
− Condition 2 : There is a SIP Phone in WAN side of MFIM
− Resolution : SIP Data / SIP Phone Attributes(211) – Same Zone with MFIM -
OFF
− Implementation : MFIM will implement signaling with its WAN IP address for the
SIP Phone.
2. A SIP Phone is on NAT environment (for example, wireless SIP Phone via AP)
− Condition 1 : The NAT IP address or IP Port of SIP Phone (WAN address of SIP
Phone) is frequently updated.
− Condition 2 : Sometimes communication is disconnected, unreachable or
mismatched because of so-often updated address by NAT mapping
implementation.
− Resolution 1 : Enable the Keep Alive option for the SIP Station(s) that are on
NAT environment.
− Implementation 1: MFIM will send “OPTIONS” message so often (in 30 seconds)
to assist to maintain the address of SIP Phone’s WAN.
− Resolution 2 : set static NAT address mapping by port-forwarding. For example
1 to 1 static NAT address assignment by port-forwarding in NAT switch.
− Implementation 2: SIP Phone’s WAN address will not be changed.
SRTP
1. For Voice and Video RTP Data Encryption
2. To implement SRTP, VOIM channel is required for SRTP packet relay. You should
equipped LIK VOIP G/W.
3. Usage (for example, Ericsson-LG SIP Phone)
− SIP Data / SIP Phone Attributes(211) – SRTP Usage : ON
− SIP Phone Self Programming(Phone’s Web Programming) – SRTP Usage : ON
4. Encryption Key Method (for example, Ericsson-LG SIP Phone)
− SIP Data / SIP Phone Attributes(211) – 1
st
CRYPTO : select one of listed
− SIP Data / SIP Phone Attributes(211) – 2
nd
CRYPTO : select one of listed
− SIP Phone Self Programming(Phone’s Web Programming) – 1
st
CRYPTO :
select one of listed
− SIP Phone Self Programming(Phone’s Web Programming) – 2
nd
CRYPTO :
select one of listed if the SIP Phone support 2
nd
CRYPTO option
5. For other 3
rd
party SIP Phone, you need to install SRTP Encryption Method on that
Phone, at first. More technical information may be required for you.
Other SIP Phone Attributes
1. SIP Data / SIP Phone Attributes(211) – Registration Mode
− by default, Register : Re-Registration should be implemented from the SIP
Phone
NOTE
MFIM will set the Re-Registration Timer for the SIP Phone. If there is no Re-
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