1. There are fewer central spaces, and not even a common channel . 2. This system is known as Common Channel Interoffice Signaling. 3. The much longer pathway, the biliopancreatic loop, carries bile from the liver to the common channel . 4. The shorter of the two pathways, the digestive loop, takes food from the stomach to the common channel . 5. The urethra typically opens into a common channel with the vagina ( i . e . urogenital sinus ). 6. The common channel and the south branch are rated as whitewater class II-III, with the north branch class III-IV. 7. Another common channel for chargebacks is mail order / telephone order ( MOTO ) payment processing through a call center. 8. Out-of-band Common Channel Signaling ( CCS ) became nearly universal at the end of the 20th century in the United States. 9. In North America it is often referred to as " CCSS7 ", abbreviated for " Common Channel Signalling System 7 ". 10. The malabsorptive portion of the surgery reroutes a lengthy portion of the small intestine, creating two separate pathways and one common channel .