With the transition to SHDSL modulation, the concept of "long distance" has changed, reaching almost twice the distance of HDSL. This distance was tested and recorded by Türk Telekom personnel as 3.5 km over 1 pair of cables (0.5 mm) and 7 km over 2 pairs of cables (0.5 mm). One of the main reasons for switching to SHDSL modulation is to minimize the interference effects caused by the increase in ADSL users on the same infrastructure. SHDSL technology is less affected by other communication technologies on the same infrastructure compared to HDSL, thus maintaining a high level of line quality. Another reason for switching to SHDSL modulation is the increase in line capacity from 2.3 Mbps to 4.6 Mbps by combining the capacity over 2 pairs of cables.

KEYMILE, having previously produced shelves for Alcatel that enabled the use of HDSL card modems in Turkish telecommunications, now allows its SHDSL card modems to work with existing Alcatel shelves, thus enabling the use of new generation KEYMILE SHDSL card modems.

The KEYMILE Linerunner product family includes SHDSL-2 and SHDSL-1 DTM box-type modems with AC and DC power options, allowing for direct power supply from the telecommunications company's DC power source in locations where box modems are used. Since SHDSL-2 LCM modems can be installed in shelves, their power supply is standard DC. It is not possible to remove the card inside SHDSL DTM box-type modems and convert them to shelf type. In the past, HDSL modems were produced as single-type modems using empty boxes and interfaces to create box-type modems. To overcome this fragmentation, KEYMILE began producing box-type modems with interfaces as fixed components, aiming to minimize problems arising from interface modules.

KEYMILE, leveraging its expertise in communication solutions, has developed line booster (regenerator) units to provide sufficient bandwidth for communication in locations where the distance between two points is extremely long and requires high bandwidth. These units are placed at specific distances to create adequate bandwidth. The power supply for these regenerators can be managed through modems at the endpoints. The energy needed by the regenerator is sent via the existing copper cable through the card or box-type modem.

KEYMILE SHDSL modems are a preferred product, particularly in the PBX market. These modems, which provide 2Mbps connections between Türk Telekom and ISDN PRI applications, are also used in leased-line and frame relay leased line applications. Modem configurations can be easily managed with the ASMOS Manager program. The ASMOS program allows for easy detection and resolution of line quality, data loss, and various alarm situations. Shelves for KEYMILE card-type modems are available in Türk Telekom data centers throughout Turkey. Shelf stocking is quickly delivered to the required locations.