Portsmouth Hospitals University NHS Trust has confirmed that there are telephone line troubles at Queen Alexandra Hospital in Cosham.
This means not every phone call is making it through to the hospital.
Posting on Twitter, the NHS trust said: ‘We are having issues with the telephone lines on our Queen Alexandra Hospital site and you may not be able to get through to us this morning.
‘We are also having difficulties calling external numbers.
‘We will keep you updated and thank you for your patience.’
Alternative phone lines have been set up for people to phone, but should only be used in urgent cases.
For an imminent outpatient appointment or inpatient care, call 07867 780498.
For acute oncology emergency advice call 07752 700013.
The antenatal clinic is on 07850 918814, and people can dial 07395 373427 for the triage bleep and 03001 239001 for the labour line.
The renal registrar and renal triage team is on 07534 226130.
If you have a friend or loved one in hospital and need to contact them urgently, call 07544 379186.