Washington (CNN) - Amid the partisanship and protests over health care reform on Capitol Hill Tuesday, another challenge: a phone call pile-up at the House of Representatives.
"The House phone system is overloaded due to an unprecedented amount of calls attributed to the significant interest in the health care bill," a spokesman for the House Administration Committee told CNN. "Some callers will experience busy signals during high-traffic hours."
It is unclear whether it's supporters or opponents of the sweeping $875 billion dollar measure who are primarily jamming the House phone system.
Both sides are stepping up their efforts ahead of a final vote in the House which is expected Friday.
–CNN Congressional Producer Deirdre Walsh contributed to this report.