can only be installed on the UNI card. The lamp can flash at a rate of 200ms to 500ms ON/OFF times. The 4SLMdoes not contain any over-voltage protection and is not qualified a OPX. It also does not contain DTMF receivers,but instead shares the system DSP resources. The OfficeServ 7100 4SLM supports Caller ID to single line tele-phones. The 4SLM can only be inserted in any of the three slots on the UNI card. Each port on this card is intendedfor connection to one telephone. Connecting multiple telephones to a port may result in incorrect operation ordamage to the card. See installation manual for details.4TRMThis daughterboard module contains four loopstart C.O. lines interface circuits with C.O. discon-nect detection. It also contains the circuitry need-ed for Caller ID. The 4TRM can only be inserted inany of the three slots on the UNI card. Each port onthis card is intended for connection to Telco. Seeinstallation manual for details.4SWM (DATA MODULE)The OfficeServ 7100 supports one enterprise class data module. The 4SWM can be combined in the same cabi-nets with the telephone system cards to provide a converged voice and data solution. 4SWM, which is a databoard of OfficeServ 7100, provides 10/100 BASE-T interface and performs the Layer2 Switch function as the datatransmission/reception board to/from a LAN. When installed, the 4SWM module provides connection for four (4)PoE ports off the front panel of the MP10a card. These ports can be used to connect ITP phones, WAPs, SP-Net,LAN printers, PC programming, uplink to other data switches or any other Ethernet devices. This module may beused in conjunction with the licensed MGI channels when providing IP telephony services. This module can onlybe installed on the optional daughter board slot on the MP10a card. See installation manual for details.The main functions of the 4SWM board are as follows:• Auto-detection function of 100 BASE-T and Full/Half duplex• Layer 2 Switch function• 802.1p and VLAN function to support QoS• Flow Control (802.3x)• Spanning Tree Protocol (RSTP)• IEEE 802.3af Power over Ethernet (PoE)• IGMP SnoopingPower constraints must be taken into considera-tion when plugging ITP phones and WAP devicesinto the 4SWM PoE module.• The OfficeServ 7100 power supply supports amaximum of 24 TDM phones or SEPU(Samsung equivalent power units). One powerunit is equal to one (2 line TDM phone).• A maximum of 4 ITP phones or 4 WAPs can besupported by the 4SWM PoE Module.• Each time an ITP phone is plugged into the4SWM PoE port, the system capacity for TDMphones is decreased by 5.• Each time a WAP is plugged into the 4SWM PoEport, the system capacity for TDM phones is decreased by 6.2.3FIGURE 2-1UNI CARDFIGURE 2-2