Cite
HARVARD Citation
Institution,, B. (1998) PNO-ISC specification number 007. ISDN user part (ISUP). [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100104842923.0x000001
This is an interim version of our Electronic Legal Deposit Catalogue-eJournals and eBooks while we continue to recover from a cyber-attack.
Institution,, B. (1998) PNO-ISC specification number 007. ISDN user part (ISUP). [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100104842923.0x000001