The UR-7QH is a COMMS module found in various UR Series Multilin GE universal relays to add to the comprehensive nature of the universal relays. The order designation for the UR-7QH is 7Q, as stated within the model number for this specific COMMS module. The 7Q order option is a two-channel COMMS module. The first channel (Channel 1) is specified as G.703. The G.703 is a fairly standard channel that can provide pulse code modulation specifications (PCM) at a variety of data rates, depending on the unit. It is transported over cables that are either balanced (a twisted 120 ohm pair) or unbalanced (dual coax 75 ohm). The G.703 can send communication over carriers such as a T1 or an E1. The UR-7QH has a second channel (Channel 2) that is described as a single-mode LASER of the 1300 nm wavelength to transmit communication signals. Each channel is beneficial for the UR-7QH to serve as a COMMS module within the Multilin UR series of universal relays. The COMMS module has up to six loop timing modes and up to six internal timing modes that are generally factory preset.